Well I shouldn't say the action is slow all the time, but at certain points in maps, the entire game slows down regardless of how much action is occuring on screen or the resolution/color depth. If there is a lot of action on screen then it slows down to a crawl. I'm using the special OpenGL driver that allows for S3TC and I have all of the options tweaked for max performance in the UnrealTournament.ini file. This never happened on my 32MB Geforce2 card. Another thing I've noticed is that the compressed textures don't look as good as they did on the Geforce.

System Specs:

T-Bird 1200 (266)
256MB DDR@ 266
ECS K7S5A (SiS 735)
Apollo Kyro II 64MB
Turtle Beach Santa Cruz
Promise ATA 100 PCI controller

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Sir, are you classified as human? Negative, I am a meat popsicle.