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Lower than desired gpu usage in Crysis 2 compared to "before".

post #1 of 16
Thread Starter 
I've run into a slight problem, an invisible wall of 100 fps that wasn't there before.

Here is my usage from around patch 1.4



Here is the scaling I was getting:



Here was the max fps I could get with my i5-2500k before:




I decided to wait for DX11 before I played through the game... As luck would have it a few days before DX11 released I broke one of my 470s. I messed around a bit with a single card but didn't play very far as I really wanted to wait for a new card.

Here is my single card usage:



Here is the dual card usage:



Here is single card fps:



Here is my dual card fps:



Here is the max fps I got before in DX9:


About 60~% cpu average usage.

Here is max fps now in DX9 and DX11:


25% cpu usage now.


Whats going on, did patch 1.9 break something? CPU bottleneck? Page file bottleneck? Vram bottleneck?

I'm lost
    
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post #2 of 16
I had this same issue with my 470 sli- not just in crysis 2 though, in a number of games. I used driver sweeper to clear out everything nvidia, reinstalled latest WHQL drivers, went into nvidia control panel to re-enable SLI and turn on triple buffering, then everything worked great again. Only takes a few minutes really so I'd recommend doing that
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post #3 of 16
Roll back patches and see if that was the issue. I doubt it's a hardware issue. Probably driver/patch related.
post #4 of 16
Thread Starter 
Quote:
Originally Posted by E-Peen View Post
Roll back patches and see if that was the issue. I doubt it's a hardware issue. Probably driver/patch related.
Only problem with that is if I roll back the patches I lose DX11 and High Res.

I jumped into a 32 map in BFBC2 and wasn't able to reproduce the usage issue.



The more I think about it - the more I think it is a driver/game issue.

The only other thing I can think of is vram limitation, but I would think single would suffer as well.

I wonder if 2gb 560s, or 2.5gb 570s or 3gb 580s stuffer the same issue?
    
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post #5 of 16
Dude there's too many pictures, I don't even 'get' what you're asking.

Just describe the problem using words for me

Generally, at least in Crysis 1, the #1 reason for sub-par GPU usage is going to be because of CPU-bottlenecking. Not sure if that's the case with Crysis 2 cause I don't own it. But that'd be my first suspicion.

2nd is: what's your vram usage looking like in afterburner? If you're tapped out, that could totally cause lower GPU usage, because it's just like any other bottleneck. And I don't know that the memory requirements might not be slightly higher with two cards vs. one. Not sure why offhand, but I'd not be shocked to find out that's the case.

If I play batman AA with one card, I get like 700MB vram usage, and if I play it with two in SLI, I get like 1100MB. Its the only game I've ever compared w/though, and I only checked one time, so it might've been a glitch.
Edited by brettjv - 8/4/11 at 1:20am
    
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post #6 of 16
Thread Starter 
Vram is tapped out for sure, but I don't get the slow downs I would expect from a vram limitation.

Gameplay is smooth, I can run fraps at 50-70 fps no problems, no lags...

I'm just wondering what is up with the usage, and if it something I can address or if its on a driver/game level and I need to wait for it to be address either by Crytek or Nvidia.


Sorry
    
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post #7 of 16
280.19 drivers are very sensitive to GPU usage unlike older drivers. They also have improved power management. GPU will switch between profiles faster than older drivers.
And your fps seems right to me, I don't see a problem there?
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post #8 of 16
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Ignore me I seem to be having an extended blond moment.
    
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post #9 of 16
Quote:
Originally Posted by BallaTheFeared View Post
Ignore me I seem to be having an extended blonde moment.
Fixed
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post #10 of 16
Try new drivers, and while i don't think you NEED to OC your cpu, it might fix it.

I haven't checked in a long time, but to get 100% utilization on both of my cards (GTX 470) i needed 4.0Ghz (or 4.1 i don't remember exactly which) with my 2600K when running certain games. And CPU utilization wasn't even 50%.

I see you're having GPU usage drops in BC2, it was "sort-of" like that when my cpu wasn't oc'd... I doubt C2 is that unoptimized though, but whatever works... works. I suppose these games don't really care about how many cores you have or what can they do, they care about how fast they can do whatever function the game assigns them.

That's bad CPU optimization in my opinion.

Protip: With no problems whatsoever you should be able to keep a 98% GPU utilization across the chart. 99% would be the best case scenario.
Edited by ilam3d - 8/4/11 at 2:58am
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