BlazingSun

Hey guys,
I have come across a strange new problem in playing the game. Ever since I upgraded my graphics card to a Radeon HD 4870 2 weeks ago and put up my settings to high, some weird things have happened. Although the game runs smoother in general, some textures seem to get confused or in the wrong place. A perfect example of this:
http://img197.imageshack.us/img197/1917/stripysky.png
http://img148.imageshack.us/img1/993...dingscreen.png
http://img217.imageshack.us/img217/6337/stripyfloor.png
it can (and does) happen in any part of the game. I had a search through the forums but I couldn't find anything similar to what's happening to me.
Thanks in advance
BlazingSun