Bug #12700

OA: Very low FPS when using RCO and Scopes looking at bushes, a treeline or a forest.

Added by INVICTUS almost 5 years ago. Updated over 3 years ago.

Status:Closed Start date:08/05/2010
Priority:Normal Due date:11/01/2010
Assignee:INVICTUS % Done:

0%

Category:Performance breakdown
Target version:-
Affected ArmA II version:1.60 BETA First affected build:
Reproduced by another DH user:No First affected ArmA II version:
I am using some Mods:No Single / Multi Player?:
I am using: BIForumURL:
Reproducible for you:Yes NGUrl:
Related to content of DLC: WIKIurl:

Description

I get huge lag while using Scoped weapons and RCO/Acog style is the worst.

ExampleACOGMission.zip (139 kB) INVICTUS, 08/05/2010 19:22

sample_9_13_10.Takistan.zip - DEMO MISSION SEE IF YOU ALL CAN REPRODUCE (1.7 kB) INVICTUS, 09/14/2010 04:06

0002.jpg (135.8 kB) kju, 09/14/2010 06:18

0003.jpg (215.3 kB) kju, 09/14/2010 06:18

Tree_Perfs_RCO.Takistan.zip (838 Bytes) 50.cal, 10/11/2010 16:20

REPRO_MISSION_PACK.zip (2.3 kB) INVICTUS, 10/11/2010 22:14

ArmA2_OA_BAF_Example1.wmv (38 MB) INVICTUS, 10/26/2010 01:59


Related issues

related to ARMA2 Community Issue Tracker - Bug #11456: Less performance near Bushes and Trees with latest betas Closed 06/25/2010 10/01/2011
related to ARMA2 Community Issue Tracker - Bug #7866: [A2/CO] The orange bushes and deciduous trees are very ta... Closed 01/08/2010 12/01/2010

History

Updated by Fireball almost 5 years ago

  • Due date set to 08/19/2010
  • Status changed from New to Feedback

Can you provide an example mission and describe when the lag occurs to you and be a bit more elaborate?

We need to know which weapons exactly, if they are from A2 or from OA, etc.

It sounds more a bit like a tech issue only for you, tbh.

Updated by Enforcer almost 5 years ago

It normally happens when you have a zoomed out view and you look at bushes, a treeline or a forest. That problem was already in ArmA 1 but was solved.
It has something to do with the shading ( sometimes a mix of shading and other detail settings like high object and high AA ).
Try to reduce it and see what happens, i hope it helps.

Updated by INVICTUS almost 5 years ago

I will create a example mission the lag happens as I zoom into the scope view. Right as you can see through the scope the bushes in Takistan turn grey for a second then pop into the scene I believe this is texture streaming issue.

Updated by INVICTUS almost 5 years ago

Here is an example mission and a screen shot where to look from your position to see what I am talking about the drop from 170 to 50 FPS. Also looking to the barracks type buildings to the right of the hangar the fps drops to 70 from 170 but the game lags or stutters. Mind you if I use the iron sights the issue is not as noticeable.

Updated by Fireball almost 5 years ago

  • Due date changed from 08/19/2010 to 11/19/2010
  • Category set to Performance breakdown
  • Status changed from Feedback to Assigned

Thanks.

While it might be what others need to repro the issue, I cannot. It might be a SLI and/or driver issue; did you try to disable SLI only to check if the issue goes away?

PS: I removed your duplicate ticket.

Updated by Fireball almost 5 years ago

  • Status changed from Assigned to Feedback

Tell me what you see when you disable SLI. Meanwhile I update my drivers from Beta.

Updated by INVICTUS almost 5 years ago

Thanks for removing the other ticket I have another computer an Alienware M17x R2 with dual 5870's in Crossfire X that has the same issue. I will disable SLI and Crossfire to see if it helps.

Updated by INVICTUS almost 5 years ago

Hmm I disabled SLI and get the same experience I think my FPS are not the issue it seems to be the game engine. I am not able to turn around fluidly while in zoomed I will make a video and post back.

Updated by Fireball almost 5 years ago

  • Due date changed from 11/19/2010 to 08/21/2010

Needs more feedback from other users experiencing this to pinpoint the reason. I'm with the latest Nvidia drivers too now and don't experience what you see.

You should also play with your quality settings to check if any of those affect the issue.

Updated by kju almost 5 years ago

  • Subject changed from OA FPS when using RCO and Scopes to OA: Very low FPS when using RCO and Scopes looking at bushes, a treeline or a forest.

Updated by 50.cal almost 5 years ago

I have the exact same issue with all scoped AR and sniper rifle from A2 and OA using 2D sights.

The game runs well until there's vegetation on the way when looking trough those 2D sights.

Obviously it's more noticeable on Chernarus map...

I have to reduce dramatically the object details, shadows and terrain details if I want to use any m4/16 with acog, ak PSO or any other sniper rifle.

Overall it's a 30 to 40% FPS drop using these scopes.

Surprisingly the binocular (which basically uses a 2D sight as well) doesn't have such a big impact on performances.

Edit I did not mention my PC specs... so here you go:

Intel CD2 E8400
Evga 9800gtx 512Mo DDR3
Corssair 1333 4Go DDR3
Asus motherboard...

Using latest beta.

Updated by INVICTUS almost 5 years ago

I still have the issue I can point to a mission that reproduces it. India Echo Delta you can find it at armaholic.com [[http://www.armaholic.com/page.php?id=11781]]

Updated by kju almost 5 years ago

Well such a complex mission is hardly a good demo mission.
If at all, you would have to provide specific information
how to repro it there.

Updated by INVICTUS almost 5 years ago

I will attach a demo of were it happens.

Updated by kju almost 5 years ago

ty

Updated by Fireball almost 5 years ago

  • Due date changed from 08/21/2010 to 09/15/2010
  • Assignee set to INVICTUS

Giving some more time, please test with latest BETA patch.

Updated by INVICTUS almost 5 years ago

I go the new expansion BAF and latest beta.
I will attach a demo mission.

It appears the performance is the same for me since the patch.
I get heavy texture lag near the purple tree's and the marijuana farm on Takistan.
I can't recall the name of the city.

Updated by 50.cal almost 5 years ago

Same here.
BAF+latest Beta. Clean install on a new win 7 64 bit OS.
Huge performance drop looking at trees and bushes with RCO scopes (all).
All over Takistan map.

It's more noticeable now while playing some of the new missions where we use scoped weapons ;-)
Try E03 : Search and Detroy.

It seems the Anti Anisotropic Filtering and Anti Aliasing have a big impact on perf while using scoped weapons.

Updated by INVICTUS almost 5 years ago

I am currently with out a computer to make a test mission. My two main systems are in for repair I get the laptop back today and will post the mission then.

Updated by INVICTUS almost 5 years ago

Here is a Sample finally got the computer out of the shop!!!

Updated by kju almost 5 years ago

  • File 0002.jpg added
  • File 0003.jpg added
  • Due date changed from 09/15/2010 to 12/01/2010
  • Status changed from Feedback to Assigned
  • Assignee changed from INVICTUS to Dwarden

ty

40-45 to 15-20 drop here

Updated by RobertHammer almost 5 years ago

It takes alot FPS because , those trees are eating most the FPS if you look where are not any trees it will go normal

Scopes arent a problem , those trees and bushes are FPS eating monsters :D

Updated by INVICTUS almost 5 years ago

Any ideas on when we can cut down those monster FPS hogging tree's and bushes. I live in Oregon I can bring a chainsaw! :)

Updated by INVICTUS almost 5 years ago

Dwarden when should we expect some beta's to address this issue. I am just curious as for me this is a show stopper unless it gets fixed. This is my favorite game and hope its fixed soon. I have never seen a group so dedicated to their work I give you all kudos!

Updated by INVICTUS almost 5 years ago

I installed the newest beta and still get the same issue. Beta 73478

Updated by Xeno almost 5 years ago

Yes, can confirm it. Still major FPS drop with 73478.

Those bushes and trees are not only eating up performance but also look really ugly (low lod).

Updated by Fireball almost 5 years ago

Xeno wrote:

Those bushes and trees are not only eating up performance but also look really ugly (low lod).

So you're saying that you see the low LoD models of the trees/bushes and still have the performance hit?

EDIT:
With my GTX 460 I got from 50 FPS down to 32 FPS looking at the bush/tree row in INVICTUS' demo mission.

Updated by INVICTUS almost 5 years ago

I too have the LOW LOD occasionally when panning across the tree's.

Updated by Fireball almost 5 years ago

INVICTUS wrote:

I too have the LOW LOD occasionally when panning across the tree's.

I'm only asking, because that would mean that - contrary to the currently popular belief - not the complexity of the high LOD is causing the issue, but something else...

Updated by Xeno almost 5 years ago

Fireball wrote:

So you're saying that you see the low LoD models of the trees/bushes and still have the performance hit?

Yep.

EDIT:
With my GTX 460 I got from 50 FPS down to 32 FPS looking at the bush/tree row in INVICTUS' demo mission.

That's quite a lot.

Updated by RobertHammer almost 5 years ago

btw Have you tryed look with FLIR into the same place wheres is the FPS hit? in FLIR mode theres no FPS hit it goes normal - interesting - maybe the tree shader /rvmat/ eats more than expected

Updated by INVICTUS almost 5 years ago

FLIR seems to make a difference, Not as much lag. I think we are onto something. I heard this was fixed in ARMA2 but I tested all the beta;s since the game was released. I never had smooth graphics while using a scope.

Updated by INVICTUS almost 5 years ago

Any news on when we can see a beta to address this issue?

Updated by INVICTUS almost 5 years ago

Tested with new beta 73643 still happening. Although a lot of good fixes.

Updated by kju almost 5 years ago

  • Affected ArmA II version changed from 1.53 BETA to 1.55 BETA

Updated by INVICTUS almost 5 years ago

Can someone else do a test to verify they can reproduce the issue.
Thanks all.

Updated by INVICTUS almost 5 years ago

Is there any kind of streamer debugging tool or tool of likeness to this?

Updated by INVICTUS almost 5 years ago

This looks to be an issue with the streaming technology. I get similar results in the cities and around vegetation.

Updated by INVICTUS almost 5 years ago

So any word on the street for this? I would love to play as I own all the BI FPS games, but the performance issues are a killer. I need to have smooth game play. Please get it fixed, BAF is calling.

Updated by Fireball almost 5 years ago

It's hard to fix something that's only reproducible to few (and not to any devel, as chances might be).

Maybe it's fixed with some future build already, since lots of streamer/LoD issues seem to get fixed with upcoming BETA.

Updated by INVICTUS almost 5 years ago

Fireball can I get my grubby hands on this beta to help test? I have a SLI and crossfire rigs and would be happy to test on both.

Updated by Fireball almost 5 years ago

http://www.qbasix.com/ARMA2/

It's not released yet, but announced on other bug tickets. Add yourself to the (inofficial) notification e-mail service at above URL, and you will be among the first to try it.

Updated by INVICTUS almost 5 years ago

Done and thanks!

Updated by kju almost 5 years ago

  • Due date changed from 12/01/2010 to 11/01/2010
  • Status changed from Assigned to Feedback
  • Assignee changed from Dwarden to INVICTUS

I did retest this.

Please provide a simple video recording to understand better your issue.
This ticket is somewhat derailed with too unspecific information and the demo missions
are unfortunately hardly of any use.

Very low FPS when using RCO and Scopes looking at bushes, a treeline or a forest.

vs

I am not able to turn around fluidly while in zoomed ..

and much more..

My impression is that your HDD is too slow loading the textures when you switch between
optics or turn. Of course the vegetation uses a lot more resources due their nature (alpha
texture density).

When I set my texture and video details to lowest settings (4890 + Intel M SSD here),
I have 100-120 FPS and can turn perfectly fluid on the first demo mission (south airport
of takistan) - apart from that how does this mission related to this ticket?

The second is already a bad demo mission as it contains AI on both sides. What is the point
to have AI interfere here?
That said as with the first with setting texture and video details to lowest settings
a 360 and zoom/in out is perfectly fluid.
With highest settings (VH,VH,VH,low,low,VH,off,off) obviously not. The huge 2048x2048
textures and probably the high amount for the different objects and vegetation have their
price.

Now can this be optimized - no idea. Better hardware certainly helps (or less demanding
models/textures from BI).

However the point of this thread was originally about low FPS when looking into vegetation.

So please provide some useful demonstration of your issue and as well as a specific demo
mission for the given issue.

Otherwise this ticket serves little purpose other than a basic "rant" and should be closed.

Thank you

Updated by INVICTUS almost 5 years ago

I will make the same demo without AI. I had put them there for the user to get a taste of what happens when you actually play the game. This is a FPS game am I correct? Meaning there are supposed to be opposing forces to shoot at. I do not play this game to run around and look at the scenery... I have been a loyal fan of this franchise and have played since Flash point Cold war Crisis. To be told when trying to help this game grow that I have been wasting your and my time with a RANT is a slap in the face. I know the amount of time I have put in to these games. I purchased a game that runs choppy while using a scope and it should run fluidly period.

Updated by kju almost 5 years ago

Please read the wiki.

If you don't get or like the idea, this place is not for you unfortunately.

Updated by 50.cal almost 5 years ago

Easy there kju ;-)
I'll try to help a bit here..

OBS

When looking at trees using RCO optics FPS drops from 45 to 25.

Youtube vid 1: http://www.youtube.com/watch?v=GhE9nNAZmaE.
Youtube vid 2: http://www.youtube.com/watch?v=tjsLt0R_kYo

Simple demo mission provided

Repro steps:

Load mission and look at the trees in front of you using the RCO scope.
Switch to 2nd unit and test again to see the difference.

Expected behaviour

FPS should not drop that much when looking at trees and vegetation using RCO scopes.
More homogeneous FPS required.

Regards

Updated by INVICTUS almost 5 years ago

I was able to Repro the issue.

Updated by INVICTUS almost 5 years ago

I will also submit a video or two showing the issue. I am confused Kju you said to use SSD drive when you were able to reproduce the issue on Monday 9/13/10 you posted the following

"• File 0002.jpg added
• File 0003.jpg added
• Due date changed from 2010-09-15 to 2010-12-01
• Status changed from Feedback to Assigned
• Assigned to changed from INVICTUS to Dwarden
ty
40-45 to 15-20 drop here"

I am sorry for attacking you. I tested with my Alienware M17xR2 with dual corsair ssd 128 in raid 0 and still get the same issue.

Updated by INVICTUS almost 5 years ago

OBS

When looking at trees or Brush using RCO optics FPS drop considerably

Simple demo missions provided

Repro steps:

Load mission and look at the trees in front of you using the RCO scope.
Switch to 2nd unit and test again to see the difference.
There are 3 missions in total all in different maps

Expected behaviour

FPS should not drop that much when looking at trees and vegetation using RCO scopes.

Updated by kju almost 5 years ago

Thanks for the updates people. Still you fail to explain the presumably bug.

  • Yes the vegetation uses a lot of resources.
  • Yes you can reduce your rendering settings to reduce the effect.
  • Yes a separate texture/model setting for vegetation would be useful.
  • Yes less complex models would still look good and would be more playable.
  • Yes there is a significant drop while you zoom in.
  • Yes there is a significant drop while you turn.

These are all natural and easy to understand why it must be so.

However the question is the presumably bug you suggest:

Very low FPS when using RCO and Scopes looking at bushes, a treeline or a forest.

I get huge lag while using Scoped weapons and RCO/Acog style is the worst.

You are saying without zooming in / optics view, the FPS are fine.
Where is the comparison? Where is the demo (mission) and repro steps of it.

Otherwise this ticket is no different to these, right?

#7866

Improve performance of bushes and deciduous trees

#11456

Less performance near Bushes and Trees with latest betas

So again, your point is the zoom in/optics view is different and especially bad.
This needs evidence or its a duplicate of the above in my view.

Based on the points above, feel free to make feature tickets about
enhanced texture/model configuration or anything else comes to mind, like #7518.

Softer/smoother LOD transitions for vegetation (no shape morphing nor coloring changes).

Updated by Suma almost 5 years ago

When looking at trees using RCO optics FPS drops from 45 to 25.

Expected behaviour

FPS should not drop that much when looking at trees and vegetation using RCO scopes.
More homogeneous FPS required.

On my system the FPS drop in your mission "Tree_Perfs_RCO.Takistan" is caused by the GPU having a lot more work to do. The screen area covered by foliage is increased a lot. I am afraid their is no easy fix for this. You might try lowering your rendering settings.

As a first step, you could verify if the scene is GPU limited or not by reducing your 3D resolution in Video options. If the fps will improve, the scene is most likely GPU limited. If the fps will not improve much, there might be some other issue to look for on your system, which did not show in my tests.

As for the lag, I did not see any. If you see it, you might try if changing the config value GPU_MaxFramesAhead in ArmA2OA.cfg to 2 (or even 1 or 0) would help.

Updated by 50.cal almost 5 years ago

I know you're absolutely right about my gpu limitation (9800gtx.. ;-)

It's just the fact that these trees require significantly more gpu resources than any other objects.

Perhaps there's something to do in the vid settings. Lowering the tree texture size in "high" setting while leaving the other as is might help? Don't know if it's possible.

Edit:
I've just tested for the sake of it and I can confirm that turning down my 3d res to 50% obviously helps but lowering the texture doesn't change that much actually.

Updated by INVICTUS almost 5 years ago

Too bad there wasn't a way to change the texture resolution of trees and bushes in Graphics options.

I will post video with the different settings I am using in game to duplicate it.

I get the same results with my 2 gaming rigs.
  • The desktop is a i7 @ 4.2Ghz with 8Gb Ram, 2 500gb HD Raid 0, 2- XFX GTX 275 SLI, Windows 7 Home Premium x64.
  • The second system is a Alienware M17xr2 4Gb Ram, dual 128gb SSD raid 0, 2 HD5870 CrossfireX, Win 7x64 HP also.

Updated by Suma almost 5 years ago

I know you're absolutely right about my gpu limitation (9800gtx.. ;-)
Perhaps there's something to do in the vid settings. Lowering the tree texture size in "high" setting while leaving the other as is might help? Don't know if it's possible.

This will not help much. This will reduce texture fetches, but as they are heavily cached (as the same tree is rendered again and again, the same texture is fetched again and again), this will help little. What could help is to reduce the object detail for trees (or object detail in general) or to do anything else to reduce the screen area covered by them (the "overdraw" factor).

but lowering the texture doesn't change that much actually

Great. Confirms what I write above.

Updated by 50.cal almost 5 years ago

Perhaps the tree mesh itself could be optimised (less tris)?
I don't know how you did on chernarus map but these trees are lighter than those we have on takistan map.

Updated by INVICTUS almost 5 years ago

Well I am not going to continue to support BIS as a result of the issues I have had with ArmA2 and OA and BAF. 30 FPS is insufficient and games in the modern age play at 60 so get a clue! Good luck to you all.

Updated by 50.cal almost 5 years ago

Suma wrote:

What could help is to reduce the object detail for trees (or object detail in general) or to do anything else to reduce the screen area covered by them (the "overdraw" factor).

lol I've just realised that in my last post I was actually repeating what you said before.. :)
So yes that's maybe how trees could be lighter.

INVICTUS wrote:

Well I am not going to continue to support BIS as a result of the issues I have had with ArmA2 and OA and BAF. 30 FPS is insufficient and games in the modern age play at 60 so get a clue! Good luck to you all.

Ok see you ;-)

Updated by INVICTUS almost 5 years ago

Here is a video example of the game play I experience. The video was done in the editor with no AI just drake in Takistan looking at the tree's the FPS fluctuate between 20-22 FPS on the higher video settings then I change all the settings to the very lowest and get a constant 30 FPS.

Updated by kju almost 5 years ago

I see nothing wrong in the video. Unfortunately you did not show your FPS either.

As explained above the scene / vegetation is very taxing.
You need to reduce the graphic settings for your hardware. That's all.

Looking at your hardware SLI may be one factor. Disable it and see how it goes.
If you get only constant 30 FPS with all set to low, something is very wrong
with your system.

Updated by Fireball almost 5 years ago

INVICTUS, I'm afraid that you'll have to troubleshoot your system on the forum, maybe together with other affected people. As kju mentioned something's wrong with your configuration.

When I look around in a similar environment with my single GTX 460 1GB (OCed by manufacturer), I get 60-45 FPS (that was as far I could hog it down, by looking at 2-3 overlapping trees in scope view). If your SLI is working you should get a performance exceeding my card, I think.

Updated by INVICTUS almost 5 years ago

I am actually running this game on 2 systems my home built system and my Alienware M17xR2 with a i7-920, 4GB Ram, Dual 128gb SSD in raid 0, Dual HD5870 in CrossfireX but either way I get the same performance. Not sure how on 2 separate systems and Different video cards I get the same results as in trouble shooting the only thing that appears the same is ArmA2.

Updated by Fireball almost 5 years ago

So how does that compare with

When I set my texture and video details to lowest settings (4890 + Intel M SSD here),
I have 100-120 FPS and can turn perfectly fluid on the first demo mission (south airport
of takistan) - apart from that how does this mission related to this ticket?

?

I'm afraid something's wrong with either of your boxes.

And my GTX 460 is delivering better performance too, everything on very high except for PP (very low) and Terrain (high).

Updated by INVICTUS almost 5 years ago

Are there any pointers you can give Fireball I deleted my profile this helped a little I am not using any mods just the betas. No command line switches does anyone run this with more than 1 graphics card?

Updated by Fireball almost 5 years ago

The best pointer I can give you is this one: http://forums.bistudio.com/forumdisplay.php?f=83

There are stickies about such issues and you have the possibilities to post e.g. a poll and then ask for advice from those with SLI/XFire and something along this.

Updated by INVICTUS almost 5 years ago

I think its fixed I set the VRAM in the GUI and now am getting a constant 60 FPS. I had it at default I set it to very high and seems to be all better.

Updated by Fireball almost 5 years ago

  • Status changed from Feedback to Rejected

Now that was easy, wasn't it? I'm happy for you :D

Updated by INVICTUS almost 5 years ago

I figured out the actual cause it was vsync I set WIN 7 to basic theme and it seems to be better 90+ FPS.

Updated by INVICTUS almost 5 years ago

I will test on the crossfire machine deleting config and changing vram in the GUI

Updated by 50.cal over 4 years ago

Just to add my word on this since I was having the same issue for different reasons. Clearly my problem was due to my GPU not being powerful enough. I have now a gtx480 and it's working like a charm. I even have better frame rate IF I am using scope than if I'm not in some situations.

With that GC my sys bottleneck is certainly my CPU now :)

Updated by EasyC over 4 years ago

Am having this issue - Please see this thread.
http://forums.bistudio.com/showthread.php?p=1901019#post1901019

Updated by INVICTUS over 4 years ago

I am still having the issue on 3 separate computers. I built a new machine i7 with 8gb ram 2 GTX 570's in SLI, OCZ SSD. With all the other games I play I have found this issue to be solely with this game. I will wait for hopefully a magic fix or a new game engine to be able to enjoy this SIM. Going from 130FPS to 20FPS is just ridiculous. I think BIS is great, but it seems that the engine has issues with optimization on certain systems. My first System is a AM3 Phenom 2 940BE OC to 3.8Ghz, 8GB DDR2, 2 Seagate 500GB HD Raid 0, 2x 8800GTS 512 in SLI, Windows 7 HP, The second system is a Alienware M17xR2 an i7, 8GB Ram, Dual 500GB HD, 2x HD5870 in CrossfireX, Windows 7 Ultimate, and my Main system is an i7 860 @4.2Ghz, 8Gb DDR3 OCZ Agility2 SSD, 2 Seagate 500GB HD in raid 0, 2x GTX 570 in SLI, Windows 7 x64 HP. So as you can see from the specs of the machines I use. The issue occurs with most new hardware and on different manufactures. The only similarity is the game having issues. In trouble shooting this is the least common denominator. I have spent months of time trying to get this to work...

Updated by NorthStar about 4 years ago

I know I'm very late coming into this issue and it has little to no chance of being updated at this point, having already been rejected. That said, I can confirm that this is in fact a real issue and still exists in the latest build. It IS specific to using scopes, because I can look at the same trees without a scope and see no FPS decrease. It is also unrelated to SLI because I'm running a single Nvidia GTX260. I have never used FRAPS but would be happy to try and make a video to demonstrate if someone will look at it. I've had this issue for months and months and have been hoping the entire time that it would be fixed because it seems quite obvious. It's the single issue keeping me from playing the game or buying any additional expansions/products.

Updated by Fireball about 4 years ago

  • Status changed from Rejected to Assigned
  • I am using deleted (CO (A2+OA))

Reopening then. But this sounds like a basic engine vs. complexity of models issue.

Updated by NorthStar about 4 years ago

IIRC I see it happen even on very low graphics settings. Will attempt to make a video when I get home from work.

Updated by NorthStar about 4 years ago

Ok, here are a couple videos I made to help demonstrate... they aren't much better than ones already provided, but I do display the graphical settings I'm using, as well as the FPS throughout. I also have view distance at minimum to help rule out stuff in the background. I didn't adjust the 3d resolution at all but from prior experience it doesn't affect things that much, nor do any of the other settings. I chose this area/these trees because they are some of the worst despite being rather bare foliage-wise (some trees are definitely worse than others).

First pass with mostly high settings. I look through the scope a few times to demonstrate FPS drop, then skip ahead to standing near the same group of trees to show that FPS without scope is still pretty decent, even at full LOD:
http://www.youtube.com/watch?v=nOoo8L1pKp0

Second pass with lower settings, still a significant FPS drop and once again when I move close to the trees they render just fine:
http://www.youtube.com/watch?v=XDbwuJXjcSQ

I'm willing to believe that it is primarily a LOD issue with some trees, because larger groups of them can cause a big FPS hit even without a scope, but there really seems to be something going on with the scope that exacerbates the issue. If nothing else I would say at minimum, please, please, please make an LOD pass on the trees. The lowest LOD is so low-detail that it makes for a jarring transition, while the highest LODs seem to be either too detailed or have something weird going on with them that is causing undue FPS drop. With my meager GTX260 I can run games like Witcher 2 on high settings smooth as silk; this game (and especially the scenes in these videos) should not have any problems on my rig.

Updated by RobertHammer about 4 years ago

I agree with NorthStar - you can notice this with Takistan green big trees , they have same issue and for me are the most FPS eater + some bushes have same thing as trees

Those trees must have too much polys to make that weird FPS drop and i have GTX285 :-/

Updated by LkFp almost 4 years ago

  • Affected ArmA II version changed from 1.55 BETA to 1.60 BETA

This is still happening for me in beta 1.60#85330 (haven't tried latest beta yet). Even looking through high density grass on Chernarus makes scoping unusable.

Contrary to bug specs, I don't use SLI/Crossfire, I have ATI 4850 GPU dual monitor setup.

Updated by kju almost 4 years ago

Which demo mission did you use or can you provide one?

Updated by LkFp almost 4 years ago

Somehow I missed this #23794 bug report which is better for my case since I notice slowdown only when looking on grass. I will continue there.

Updated by Dwarden over 3 years ago

  • Status changed from Assigned to Closed

closing ...
(if still happens with latest beta then either re-open the ticket or create new one and link it to this one)

Updated by galzohar over 3 years ago

i7-920, HD6870, 4GB RAM and Win7 here.

Settings are all maxed, except view distance on 3000 and post-processing disabled. 1920:1080 resolution (100%)

No mods, just steam version combined ops. While I only did the test with steam combined ops, I do notice the issue using various mod sets I play with as well.

Loaded all 3 test missions from the repro pack zip file, and stood still until FPS number was as stable as it can be (to eliminate HDD loading issues). Tested with normal view, zoomed view, and scoped view, all without touching the mouse.

Results:

Takistan: FPS drops from 38-39 to 30-32 when zooming, and 32 when using the scope.

Zargabad: FPS drops from 36-37 to 23-24 when zooming, and 13 (!) when using the scope, even though when the scope is used there is only 1 tree and a couple of bushes in view.

Chernarus: FPS starts with 17-18, then drops to 8-14 while zooming (though most of the time stays stable on 11), and 12-13 when using the scope.

It's a bit hard to talk about older versions since I can't go back and do a thorough test, but I really don't remember having such severe zoom-related FPS drops in A2 vanilla.

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