Finishing building up my new rig and got IL-2 up and running. Here's the deal: when running 'perfect' with water > 1, the animation spits and stutters here and there as if frames were getting stuck, though the FPS is cruising in the mid 50's or better. With water=1 at perfect it's silky smooth. Anyone experience this? My gut tells me it's a side effect of the dx9 port on win7 coupled with the ancient IL-2 engine (using 191.07 driver). Of course I'll be back later with a dxdiag, conf.ini and nvidia settings at the drop of a hat. Running IL-2 with the identical setting on my old rig under XP using the same g-card had no such problems at the same resolution.

But overall this new rig simply crushes my ol' 4200+ X2 (Black Death min in the low 30's), though I hope I don't get bit by the potentially funky foxconn socket on my new asus mobo (I wasn't ever thinking of massive overclocks, but modest definitely). Windows 7 rocks, makes XP look and feel stone-age.

EDIT: Problem solved by using 185.85 Win7 64 bit driver, also it seems to help by setting ProcessAffinityMask in conf.ini (see details below) and by setting the "XP SP2 compatibility" property for the IL-2 executable: il2fb.exe. To set this, right click on the icon and select properties; in the properties dialog, select the compatibility tab and set it to XP SP2. S!

This message has been edited. Last edited by: TheFamilyMan,

Why would you think that dx9 on windows 7 has something to do with il2 running on perfect mode?

I just reread that sentence and it sounds rude but it's not intended that way, I'm really asking that question for a reason. Oh, and post that dxdiag and conf.ini etc.

Im guessing you already gave my settings i try?

IL2 uses DirectX Directsound so wen you install IL2 it will ask you if you want to Update DirectX, it than downloads all the DirectX files it needs to run the game.

Here is a guy with a Similar problem like yours:
http://forums.ubi.com/eve/foru...9310655/m/1861048597

It seems that Intel Multicores have much more problems running this game well than the AMD Multicores hardly ever hear of problems like these with an AMD system.

Seems my stutter problem is due to a less than worthy graphics card, for I can run the following with no problems:
full perfect, 8xQ AA and water=4 at 10x7
full perfect, no AA and water=4 at 12x10
full perfect, 8xQ AA and water=1 at 12x10
So if I reduce the graphics burden somewhere, all is well with my new rig. But why did my old rig give me everything (full perfect, 8xQ AA at 12x10) with the same gcard? All I can think of (and I'm reaching here) is that the IL-2 engine on my i7 860 is throttling the render stage faster than the GPU can manage and frames are being ditched at times, for even when it sputters I'm seeing 50+ FPS which in my experience is screaming for IL-2. I wish IL-2 had a max FPS setting like FSX to see if my theory is valid. In the end, I'm waiting for the next gen gcards to become reasonably available sometime in the near future before getting an upgrade (I was about to get a gtx275 but decided not to put 'old tech' in my new tech rig). Thanks for your time and interest, S!

Urufu - no offence taken and it's a good question for my comment was a bit off color and by no means meant to knock win7. My bias that led to this goes back a few years when reading about 'longhorn' and that they needed a DX9 'backwards compatible' port for the new OS, eg. Vista. And to top things off, my comment turned out to be WRONG (edit: well, maybe not...see below)!

This message has been edited. Last edited by: TheFamilyMan,

Seems I'm not alone with this stutters problem with win7 running IL-2 ; this poster in a different win7 thread complains about choppiness:

http://forums.ubi.com/eve/foru...391006997#5391006997

So maybe my initial hunch about DX9 in win7 has some merit after all, considering this poster's experience with it compared directly to XP on the exact same rig running the same IL-2 install. What I find interesting is I can duplicate the stutters with XP on my old rig, which is now using 2 7800gt's in SLI, by overtaxing the AA. Interestings stuff...

Keep in mind that the 8800GTS 620MB is a whole difrent card than a 8800GTS 512MB wich is basicly a 9 series card (G92 GPU)

But what are your full system specs right now btw?

If you're running IL2 in perfect mode then you are using OpenGL, not directX. If you think it is directX you can always install the latest directX 9c redistributable package right alongside the dx11 in win 7 with no issues.

quote:

Originally posted by NDS_Camp.:
Keep in mind that the 8800GTS 620MB is a whole difrent card than a 8800GTS 512MB wich is basicly a 9 series card (G92 GPU)

That was why I spec'd the G92 in my title. Even though the G90 and the G92 are somewhat different, I thought that poster's observation with the exact same rig with different boots really showed something might be going on with IL-2 and win7 (at least in some cases).

quote:

But what are your full system specs right now btw?

Since you asked:

Intel i7 860 (stock clocked for now)
Asus P7P55D
OCZ 4x2G DDR3-1600
Corsair TX 750W PSU
evga 8800GTS 512MB
Cooler Master Hyper 212 Plus CPU Cooler
Windows 7 64 bit Home Premium

Everything except the PSU I bought locally here in 'silicon valley' for better prices than online. The gcard came from my old rig and it'll definately be replaced someday. That CPU cooler is an amazing value for $30. At stock clocked running prime95 max heat test for 20 minutes the temps bounced between 50c and 51c under control of the mobo qfan controller. Idles at about 28c under the qfan controller. Used artic silver 5 with it that I had sitting about.

This message has been edited. Last edited by: TheFamilyMan,

Strange, should be good enough to run this game with the settings i posted, i can run them fine with just one card in (took one out recently because of cooling problem / big temprature difrence.

Im guessing yours is a 8800GTS 512MB (GDDR3) version? (some versions got 1024MB GDDR2 wich actualy makes the card slower than the 512MB versions with some games)

Found the source of my stutter problem:

il2fb.exe did not have its "XP SP3 compatibility" property set. After I set this the stutters vanished.

Well so much for my armchair theories, though they're still valid in a silly way...thanks for your attention. S!

Do tell what is the proper way to set compatibility? I have NO compatibility set for il2fb.exe and I'm wondering if I can get it to run better, not that I have issues now but better is better, lol.

quote:

Originally posted by Urufu_Shinjiro:
Do tell what is the proper way to set compatibility? I have NO compatibility set for il2fb.exe and I'm wondering if I can get it to run better, not that I have issues now but better is better, lol.

I put the directions for doing this in my OP. Enjoy, S!

quote:

Originally posted by TheFamilyMan:
Found the source of my stutter problem:

il2fb.exe did not have its "XP SP3 compatibility" property set. After I set this the stutters vanished.

Well so much for my armchair theories, though they're still valid in a silly way...thanks for your attention. S!

I'm not running compatabilety mode in Vista 64 bit, Win 7 64 bit and Vista 32 bit and get no stutters in any of those.

Glad you fixed it anyway and it might work for some others having the same problems also.

Hmm Vista only let's me do XP SP2 compatibility, I guess SP3 is only on W7?

quote:

Originally posted by Ba5tard5word:
Hmm Vista only let's me do XP SP2 compatibility, I guess SP3 is only on W7?

Yes, only Windows 7 has XP SP3 Compatability mode.

This weekend I had some time to really stretch our IL-2 and found stutters in some of the maps when using my 'fix'. Our squad coop sessions seemed fine overall (occasional stutter but nothing noticably new), but offline is were I really noticed the stutter problem again. Windows 7 'recommends' a IL-2 compatibility setting of 'XP SP2' though that made no difference I could tell. Tried installing the latest DX install from microsoft to no avail. I'm going to try the Vista 64 178.xx nvidia driver, and if that's a no go I'll install XP 32 bit and see how that fares. I'll be back later with my results.

P.S. I did notice some improvement for stutters when things explode by setting the affinity mask in the conf.ini file.

This message has been edited. Last edited by: TheFamilyMan,

These are the posible settings for the game in the Conf.ini:

;ProcessAffinityMask=1 = System desides what Core(s) to use (in some/most cases the best choice!)

ProcessAffinityMask=0 System desides what Core(s) to use.
ProcessAffinityMask=1 use Core 1
ProcessAffinityMask=2 use Core 2
ProcessAffinityMask=3 use Core 1+2
ProcessAffinityMask=4 use Core 3
ProcessAffinityMask=5 use Core 1+3
ProcessAffinityMask=6 use Core 2+3
ProcessAffinityMask=7 use Core 1+2+3
ProcessAffinityMask=8 use Core 4
ProcessAffinityMask=9 use Core 1+4
ProcessAffinityMask=10 use Core 2+4
ProcessAffinityMask=11 use Core 1+2+4
ProcessAffinityMask=12 use Core 3+4
ProcessAffinityMask=13 use Core 1+3+4
ProcessAffinityMask=14 use Core 2+3+4
ProcessAffinityMask=15 use Core 1+2+3+4

Keep in mind that wen monitoring Core usage that the System will display the first core (core 1) as Core 0 and so on.


I take it your setting Affinity Mask somewhere else than in the Conf.ini file?

quote:

ProcessAffinityMask=3 use Core 1+2

Hmm I did not know this, I assumed 3 meant it put it on the 3rd core.


Also I've noticed stutters since 4.09m was installed, no matter what map I'm on. Nothing major but it's annoying, 4.08m was free of stutters for me.

quote:

Originally posted by TheFamilyMan:
Seems I'm not alone with this stutters problem with win7 running IL-2 ; this poster in a different win7 thread complains about choppiness:

http://forums.ubi.com/eve/foru...391006997#5391006997

So maybe my initial hunch about DX9 in win7 has some merit after all, considering this poster's experience with it compared directly to XP on the exact same rig running the same IL-2 install. What I find interesting is I can duplicate the stutters with XP on my old rig, which is now using 2 7800gt's in SLI, by overtaxing the AA. Interestings stuff...

In my case, since the choppiness was effected by the AA settings, I assume it is a nvidia driver (Win7/64) issue. I haven't done any further troubleshooting, but thinking about trying Win7/32. I know that my 8800GTS is very finicky about drivers and I reverted back to an older driver last year because of it.

I've beeen having stutters too. Both on Vista and Win 7 with the latest patch. Some maps I find are smooth and others are not.

I haven't figured it out. Some sections of the map are fine... others are not and nothing is obvious about the whole thing.

It seems like the worst offenders are clouds. On some maps its not a huge problem but on Slovakia and Bessarabia having any clouds at all drops the FPS down by a huge amount. I can get ... on most maps... 100-150fps depending on what I'm looking at (raw numbers, vsync off). On those two the numbers drop to 30 and 40 but they stutter their way to 5 or 2 fps for brief moments. Its not a smooth experience.

I can't figure it out.

My configuration is now a:

Core 2 Duo E6850
2GB of DDR2 RAM (forget the speed)
GeForce GTS 250 with 512mb
Windows 7 64bit

Windows 7 is new... previously it was running on Vista.