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View Full Version : Poor crossfire scaling



xfullboost
23rd Aug 2011, 19:15
Problem: GPU 1 and GPU 2 usage is below 30% during gameplay.

Game Settings: 1920x1200, MLAA, Soft shadows, DOF high, SSAO high, FOV 90, Post-Proc on, AF 16x

Version: 1.0.618.8 Steam Augmented

System:
Windows 7 Ultimate 64bit
AMD Phenom II x6 1090T (4ghz 250x16)
Asus Radeon HD 6970 (2 in crossfire) 11.7
Asus Crosshair IV Formula
OCZ Vertex 3 MAXIOPS 120gb
SSD Corsair Dominator GT DDR3 8GB
Creative Soundblaster X-Fi MB

Notes: Temperatures for each GPU core do not exceed 44c after 2 hours of gameplay. I hope in the future the developers and AMD can optimize HR better.

Badmagic
23rd Aug 2011, 19:40
I have to ask, are you experiencing problems such as hitching or stutter? If not maybe it only needs 30%.

xfullboost
24th Aug 2011, 14:08
yeah it stutters, drops frame rates. long load times to.

Kohokz
24th Aug 2011, 22:46
Yes, same thing for me it seems to happen when loading new areas, and it just lags or slows down, but then it speeds up again, its weird. I have tried turning down settings even putting on DX9:scratch: but nothing really helps the situation but so far the game is amazing and fun to play.

M17X-R2-5870X2-I7920XM-SSD

Kapteinpyn
25th Aug 2011, 00:35
Hi guys, this was an AMD driver issue, they have released a new driver (11.8), as well as a new Catalyst Applications Profile package (11.8 CAP2) , which resolves the negative crossfire scaling.

Driver Install Utility: http://support.amd.com/us/gpudownload/windows/Pages/auto_detect.aspx

CAP: http://www2.ati.com/drivers/hotfix/catalyst_application_profiles/AMD_Catalyst_11.8_CAP2.exe