Answer: Yes. 3 times. Same with the drivers, new drivers. This is not an uncommon problem. That's why I haven't upgraded my other computer from it's old X900 pro video card.
Opinion: Even so, DF2 is still WAY better than JA or JO.
Statement: I forgot to mention a reason why I think DF2 is the best. Unlike in JO or JA, when you look down into a cliff, it really is a long way down. You can see it, especially on Nar Shaddaa. In JO, Nar Shaddaa didn't look like Nar Shaddaa. It didn't give me the feeling that if I fall, I will be faling for a very long time, and you don't. In DF2, you can't see the floor without the IR goggles, and if you use a grappling hook to keep from being reset, it takes about 30+seconds to get to the bottom.
I haven't played DF or DF2, so I wouldn't know.