hi, I'm running a 9500 pro, I used to have a ti4200(I traded it for the 9500 pro). I haven't really been playing games that often, but recently I just got back into half-life 1(non-source). I noticed that it doesn't run very well when on the direct3D mode as opposed to openGL. why? and what can I do about it? direct3D seems to look a lot better.