It made my computer into a strobe light

[Naso]

Ok, I never had a problem like this with Kotor, but I install the second one, and once I get into the game engine itself it's like every other frame is just black, and my character jumps all around, and things are fairly nutty. I'm on the 4.11's right now, using a 9600 Pro. It's fine at 800x600 but anything higher than that has this problem, and it's rather bizarrely choppy even at working resolutions. Thanks!