Amnesia Graphics Bugs Help?

[Eggward]

Amnesia runs with no lag whatsoever. But the problems are in the graphics. In the beginning, the floor followed me and dark spots flashed all over the screen. However, when I entered the laboratory, I got what can only be described as double vision. In the bottom left corner of my screen there is a perfectly normal view of the screen, but in the normal view there are all sorts of lines. The game is basically unplayable. I am using the ATI Radeon Xpress 1000 video card. Any help would be appreciated.

[Holden]

Im getting something unusual as well - my game plays perfectly, but in many scenes anytime there's fog all i see are question marks where the fog should be floating down into the ground - Anyone else seen that?