I was googling all night and morning and this was the only place where I found someone with my same issue. I just upgraded to a GTX560 with hopes of playing in 2560x1440 native - but the game launches, everything looks fine on main screen & on loading screens, but then once it loads the actual game - crazy textures all over the place and I'm running sideways and all that too.... Tried lowering settings, same.... But as soon as I drop it back to 1080p with everything on super high , 8x AA, etc - runs great for hours no problem. So basically Im hoping you still read this forum and might have figured out the issue.