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5870 crossfire lags, low gpu utilization. Need help - Page 4

post #31 of 37
Quote:
Originally Posted by cud0s View Post

Okay something interesting - lag spikes seem to happen the same time as hdd usage goes up however the ram usage doesn't go over 3.3 gb out of 4. Could it be a shortage of ram?
This sometimes happens to me and when my game gets laggy for a second or two I Alt+Tab and see my disk usage at 100%. Funny.
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Jay
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post #32 of 37
Thread Starter 
For me this happens every 15-40s and it isn't always 100% load on hdd but >50%. I am getting pretty confident that it is the culprit of lag for me every lag spike correlates to hdd usage spike. And ram should not be an issue because this happens when i have 2.4 gb used out of 4gb. So ***?
post #33 of 37
Quote:
Originally Posted by cud0s View Post

For me this happens every 15-40s and it isn't always 100% load on hdd but >50%. I am getting pretty confident that it is the culprit of lag for me every lag spike correlates to hdd usage spike. And ram should not be an issue because this happens when i have 2.4 gb used out of 4gb. So ***?
Download HD Tune. Click on the health tab, take a screenshot and upload it here.
Jay
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Jay
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post #34 of 37
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post #35 of 37
Quote:
Originally Posted by cud0s View Post

hdd.jpg 143k .jpg file
Your HDD seems to be fine. Try running check disk. I have the same problem though but it's pretty rare.
Jay
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post #36 of 37
Thread Starter 
I found a way how to minimize the lag i was experiencing in crysis 3 and now the performance is good and consistent, gpu usage is ~90% smile.gif I reduced textures quality and manually reduced textures size pool which if i am not mistaken reduces the number of textures preloaded to vram. It would seem that this was a vram limitation however when i checked hdd usage it was much lower than before so i am not exactly sure what is the cause. Could be that game thinks that gpu has 2gb of vram instead of 1 because of crossfire and manages vram in a different way (mostly larger texture size pool). Anyways the things that helped me solve various crossfire issues were:
1. Clean driver install
2. Disable ulps (it reenables itself when you install/uninstall drivers)
3. Reduce texture quality and texture pool size in game.
Edit (just in case someone has same problems as me):
4. Change power profile in windows settings to performance. Apparently although neither of cpu cores were being loaded >60-70% it was still causing bottleneck. Some overclock i think helped a little bit too.
Edited by cud0s - 7/8/13 at 6:58am
post #37 of 37
Quote:
Originally Posted by cud0s View Post

I found a way how to minimize the lag i was experiencing in crysis 3 and now the performance is good and consistent, gpu usage is ~90% smile.gif I reduced textures quality and manually reduced textures size pool which if i am not mistaken reduces the number of textures preloaded to vram. It would seem that this was a vram limitation however when i checked hdd usage it was much lower than before so i am not exactly sure what is the cause. Could be that game thinks that gpu has 2gb of vram instead of 1 because of crossfire and manages vram in a different way (mostly larger texture size pool). Anyways the things that helped me solve various crossfire issues were:
1. Clean driver install
2. Disable ulps (it reenables itself when you install/uninstall drivers)
3. Reduce texture quality and texture pool size in game.
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RAMHard DriveOptical DriveCooling
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