I was complaining about this issue awhile back. Basically, Crysis was stuttering like hell in dx10, but decent in dx9. Also, this issue only popped up with Vista (duh=dx9). Others had complained about the same problem. In fact, the game would play smoother at dx9 "very high" than dx10 "medium".
However, as suspected, this was a driver issue. Upon installing 8.8 dx10 is now smooth. Just posting my experience so others who have stuttering like I described can try this and see if it fixes it for you.
However, as suspected, this was a driver issue. Upon installing 8.8 dx10 is now smooth. Just posting my experience so others who have stuttering like I described can try this and see if it fixes it for you.