Hello ioriqyz,

I do not have an ATI card, but I tried a 9700pro in the past. It freezed both STW and MTW titles, together with their expansions. Other people have comparable 9800pro and can play all smoothly.

There are problems for both NVIDIA and ATI cards. Some can be fixed by other drivers or disabling features, but I have yet to hear about a fix for a 8800. Too bad, as it is a nice card.