Firstly, I would like to thank everyone in this thread for making my UT look so much nicer

been playing it for about four years online now (I'm a true instagibber

.
However, I still have a slight problem. Since this weekend I have a new pc: AMD 64 X2 3800 with a GeForce 6800GT and this caused my UT some problems. It runs like crap: it runs for a second, seems to stop and then goes on again at an increased speed, stops again etc. I tried a million things before even coming here, finally concluded that it did the same even in software mode, which made me think about the dual core thing. So I forced it on one core and voila, everything worked all of a sudden. Is there any way that anyone knows of to fix this problem, or just have it run on one core permanently? (its quite annoying to have to force it every time it starts again). Any help would be greatly appreciated, I would love to be able to play the game properly again with all these cool graphics enhancements