I've tried the in-game "High" settings and it happened with that. Then I've tried the tweaked "Ultra High" settings by replacing the stock values of "3" with "4" in the Video.con file. Still there.What are your ingame setttings?
4xQAAA, 16xHQAF, Vsync + Triple Buffering, 1680x1050.What are your 3D Driver settings?
Yes. Off, Standard, and High.Have you tried disabling Catalyst AI?