Seems to be running better with my 9800GTX+, though with the Hi-Res stuff, or even low res varient, it does stop and pause a moment here and there at the beginning of the game, but after a while it seems to smooth out... some other higher end 3D games also act this way.
I've also noticed that now that I have the 9800GTX+ installed instead of my old 7850GT, the AROS mouse vanishes when I exit most GL games like Jedi Outcast and Duke 3D. Can't find a card without some sort of driver issue or another. I HATE being forced to reboot.