I am using an nvidia GTX550Ti. I have gotten decent fps with f1 2011. avg 54 with all ultra on dx9. Since the new patch, I now have strange looking pop in and out of the crowds in the grandstands. I know this is already been posted on CM fanboy site but I am wanting to know if this is an nvidia issue even though it was fine before the patch. Any AMD guys having this issue as well. I will gladly ditch the card if thats the case. i already have had it trying to play any real sims with nvidia hardware.