What drivers are you using?
What the title says. I've been using the 169.25's for a while now. I'm running Vista x86. Any reason to switch driver sets for Crysis?
C2Q @ 3.6GHz | GA-P35-DS3L | 8GB DDR2 | EVGA GTX 580 SC 1.5GB | Windows 7 Ultimate x64
C2D @ 3.0GHz | GA-P35-DS3L | 4GB DDR2 | HIS AMD 6990 4GB | OS X Lion 10.7 | Windows 7 Ultimate x64