No multi GPU support? : Fallout: New Vegas

» Thu Apr 08, 2010 8:42 pm

After noticing how horridly Falloutnv ran regardless of the settings on an ati 5970 and a 5850 in crossfirex, I initially assumed it was a driver issue but desided to look into it a bit more. After a little bit of testing I discovered That only 1 of my 3 GPUs was being used. I can't help but think to my self "Seriously? It's only 2010 and this is a major title". Any ways I don't Think it's simply a crossfire issue since not only is the 5850 not being used but 1 of the GPUs on the 5970 isn't either. Can any 1 else confirm this, especially nvidia users as I'd like to confirm that this isn't only an issue with ATI cards.

Edit: Just to confirm I wasn't crazy I desided to fire up fallout 3 to make sure that game used multiple GPUs and low and behold it infact does. I'm pretty sure FO3 and FONV use the same engine so why would NV not support multiple GPUs?

Edit: Confirmed that Nvidia based GPUs have no Multi GPU support.

» Thu Apr 08, 2010 10:26 pm

I asked a friend of mine to test the issue on his pc and same exact problems. However his system also used ATI cards so I'd appreciate it if any nvidia users could confirm this.

» Thu Apr 08, 2010 1:28 pm

I asked a friend of mine to test the issue on his pc and same exact problems. However his system also used ATI cards so I'd appreciate it if any nvidia users could confirm this.

I also use an ATI card 4870 x2 and my 2nd core sits at 0% load as well. Glad to see I'm not alone. All I have done since this game was released is change/try different settings. Hope this issue is resolved soon.

» Thu Apr 08, 2010 2:08 pm

I have 2x EVGA GTX295's in Quad-SLI, tried every combination (single, multi-gpu, Tri-SLI, Quad-SLI), no matter which one I tried i saw no increase in performance. Not to mention no matter what combo I still can't play this game on high, let alone Ultra without it dropping down to 20-30 fps everytime I see a NPC or town/buildings.... A+ on a [censored] console port Obsidian!

» Thu Apr 08, 2010 7:41 pm

I have 2x EVGA GTX295's in Quad-SLI, tried every combination (single, multi-gpu, Tri-SLI, Quad-SLI), no matter which one I tried i saw no increase in performance. Not to mention no matter what combo I still can't play this game on high, let alone Ultra without it dropping down to 20-30 fps everytime I see a NPC or town/buildings.... A+ on a [censored] console port Obsidian!

20 - 30 fps here as well on ultra. And God forbid I fight multiple enemies at once, then it shows 12 - 18 fps but stutters.

» Thu Apr 08, 2010 5:09 pm

Well it seems I can officially rule out any chance of it being an ATI problem. So all there is to it is the game Doesn't use multiple GPUs... Just wow Even FO3, it's predecessor does that and that game is 2 years old

» Thu Apr 08, 2010 6:25 pm

Well it seems I can officially rule out any chance of it being an ATI problem. So all there is to it is the game Doesn't use multiple GPUs... Just wow Even FO3, it's predecessor does that and that game is 2 years old

Well, just based on the information you have stated above, I would assume its a bug that was created while editing the original fallout 3 game. I can't imagine that this is intentional.

» Thu Apr 08, 2010 10:37 am

Well, just based on the information you have stated above, I would assume its a bug that was created while editing the original fallout 3 game. I can't imagine that this is intentional.

I doubt it was an intention my self, but y'know you'd expect the game to be optimized to run on modern systems much less run well in general.

» Thu Apr 08, 2010 10:17 pm

I doubt it was an intention my self, but y'know you'd expect the game to be optimized to run on modern systems much less run well in general.

And they pretty much have the exact same game here as fallout 3. Optimization was an expectation of mine as well. Just will have to wait i guess.

» Thu Apr 08, 2010 11:45 pm

And they pretty much have the exact same game here as fallout 3. Optimization was an expectation of mine as well. Just will have to wait i guess.

Very true my friend. Looks like obsidian/bethesda have quite the patch to release to fix all these major problems.

» Thu Apr 08, 2010 10:20 am

You know, I thought it was just me. I posted a thread about this on yesterday but it must have been deleted. I'm sitting on 5870 Crossfire and the game only uses one GPU. Not that I need it because i still get buttery smooth performance, but I was expecting to see the ATI Crossfire logo in the top corner of my screen

» Thu Apr 08, 2010 7:01 pm

Ugh... so much effort and I still can't get the game to enable it. Idk if i should laugh at obsidian for this or be mad at them.

» Thu Apr 08, 2010 11:48 am

After adding the dll file that fixes the NPC FPS drop issue, both my 5870s will now read 30-40% used where before only 1 would. Even though both would fire up to 3D mode, only 1 actually did anything.

Shame it wont use even 1 at 100% let alone 2 cards.

» Thu Apr 08, 2010 8:58 am

After adding the dll file that fixes the NPC FPS drop issue, both my 5870s will now read 30-40% used where before only 1 would. Even though both would fire up to 3D mode, only 1 actually did anything.

Shame it wont use even 1 at 100% let alone 2 cards.

So you are seeing activity on both of your cards? What have you done besides the update?

» Thu Apr 08, 2010 10:31 pm

So you are seeing activity on both of your cards? What have you done besides the update?

Yup. 30-40% on both. Nothing. I'm hoping the patch that just installed continues to use 2. Off to test.

» Thu Apr 08, 2010 10:45 pm

My 8800gtx's show 50% usage at all times.

» Thu Apr 08, 2010 9:41 pm

*deleted*

Need to do more testing.

» Thu Apr 08, 2010 10:53 pm

After adding the dll file that fixes the NPC FPS drop issue, both my 5870s will now read 30-40% used where before only 1 would. Even though both would fire up to 3D mode, only 1 actually did anything.

Shame it wont use even 1 at 100% let alone 2 cards.

I desided to give this a try and it enabled all my GPUs but at the same time my framerate dropped from it's usual 80 average to a very mediocre 30 average. To me this isnt at all playable framerate. If I can have 80 frames average with 1 gpu, I dont see why I should have 30 frames with 3 GPUs unless this game truely was never designed with multiple video cards in mind.

Edit: Funny, I disabled crossfire and performance increased to 40 fps. Basically what this is telling me is the fewer GPUs your system has, the better the game will perform. Yay for bad game design.

» Thu Apr 08, 2010 9:42 pm

Yep, Radeon HD 5970 here on windows 7 64bit. It's only using one gpu with catalyst A.I enabled and I'm getting insane frame drops near crowded locations, I'm talking in the 20's or below.

Here are some things I tried.

1. Running the game in administrator mode // windows xp service pack 2 // pack 3 mode, no change.

2. Turning Vsync off on the card and off in-game, no change.

3. Changing the applications .exe's name to oblivion.exe Was said to have worked in fallout 3 for dual gpu cards so I figured the fix might be able to transition to a 5970 for fallout new vegas, I was wrong, no change.

4. Tried turning catalyst a.i off to see if I would get a better framerate with 1 gpu on my 5970 card even though it was already using 1 with cat a.i on. Once again there was no change at all.

Things I haven't tried:
1. Using the dll user fix. - Not going to try this. When you pay 630 for your video card, you'll understand too. :wink_smile:

» Thu Apr 08, 2010 9:48 pm

Yep, Radeon HD 5970 here. It's only using one gpu and I'm getting insane frame drops near crowded locations, I'm talking in the 20's or below. Haven't seen if disabling catalyst a.i increases frame rate on 1 gpu or not but that's the only thing I haven't tried other than messing with that dll thing. Still don't want to use that fix.

I'll go check if disabling catalyst a.i on a 5970 gets better results, I'll edit this post with those results.

Everything else I've tried...

1. Running the game in administrator mode // windows xp service pack 2 // pack 3 mode, no change.
2. Turning Vsync off on the card and in-game, no change.
3. Changing the applications .exe's name to oblivion.exe Was said to have worked in fallout 3 for dual gpu cards so I figured the fix might be able to transition to a 5970 for fallout new vegas, I was wrong, no change.

Things I haven't tried:
1. Turning catalyst a.i off and seeing if I get better frames with 1 gpu for my 5970.
2. Using the dll user fix. - Not going to try this. When you pay 630 for your video card, you'll understand too. :wink_smile:

The problem isnt hardware related I can promise you this since nvidia users have the exact same problems. Dont bother with the dll as you actually average worse fps, atleast on multiple GPUs lol. Idk what obsidian was doing when they gave this game the okay to be released but I doubt it involved considering if the game was actually playable. It's funny since this framerate issue is relatively small in comparison to the numerous game breaking bugs.

» Thu Apr 08, 2010 6:28 pm

The problem isnt hardware related I can promise you this since nvidia users have the exact same problems. Dont bother with the dll as you actually average worse fps, atleast on multiple GPUs lol. Idk what obsidian was doing when they gave this game the okay to be released but I doubt it involved considering if the game was actually playable. It's funny since this framerate issue is relatively small in comparison to the numerous game breaking bugs.

I edited that post I made significantly.

I've only really found one bug that I was able to notice and that was the workbench issues, unless there are bugs that I'm not even noticing happen in which case that is actually more frightening than the ones that stand out. I now wonder if I've missed a quest that didn't occur because of a random bug or something. Sigh... Why did this happen? I Was so hyped on playing this game, now I feel depressed.

» Thu Apr 08, 2010 3:21 pm

i'm running two ati 5770's in crossfire......according to catalyst only one card is showing activity at 28% percent......the second card 0% percent and i have crossfire enabled

as for the fps.....when not near a npc im getting around 25-30.....when near a npc im at a steady 30......when i pause the game (hit esc) im at a solid 60

:EDIT: i am also running the game on ultra quality

» Fri Apr 09, 2010 12:27 am

Apparently the issue is that New Vegas is started through a launcher unlike fallout 3 which you could start directly through an exe file. In new vegas the exe file and the launcher file both initiate the launcher which is what is causing the problem, other modern games that use launchers have the same problem. The only way to get around it would be to avoid using the launcher but as far I as know you can't do that.

» Thu Apr 08, 2010 4:05 pm

I"m running with 2 HD4890's in crossfire. It seems like both cards are being used, but not to their full potential. (Not too sure of %, I think I saw both at 50)

I'm using the .dll and .ini fixes and my frame rates range from 38 - 120. I used to get frames as low as 11 before trying the fixes.
I need stable frame rates. >.<

» Thu Apr 08, 2010 6:52 pm

I"m running with 2 HD4890's in crossfire. It seems like both cards are being used, but not to their full potential. (Not too sure of %, I think I saw both at 50)

I'm using the .dll and .ini fixes and my frame rates range from 38 - 120. I used to get frames as low as 11 before trying the fixes.
I need stable frame rates. >.<

The .dll does enable multiple GPUs but barely makes any use on them what so ever, defeating the purpose. It seems the only thing we can do for now is wait for a patch to address this issue.