UT2k4, CHOPPY!!!!!

[ookabooka]

Ok, for some odd reason, ut2k4 is really choppy. It performs fine, then will lock up for a second or so seemingly randomly. Everything else works, sound, video, net, etc. I tried setting all the visual options to their lowest, but this had no effect. Plus it takes literally about 3 minutes to load a level. On my dual 1600+ i didnt have any of these problems, it loaded in about 30 seconds, and the gameplay was very fluidic, no issues. Is anyone else having these sorts of issues? I ran top on my other machine via ssh while i was playing. and it looks like there are 3 ut threads. And whenever it gets choppy, one of the threads that is usually around 30% usage or so, jumps to 99. when things smooth back out, it goes back down. I am totally clueless as to why this happens. Both the 32 and 64 bit versions do this. Any ideas?
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CFLAGS="-march=i386 -m64"
from root (/) : mount -t proc proc proc

[mean]

Same here, but i had cpudyn which was kicking in and switching the cpu to 800 Mhz from time to time
Did no retry after disabling cpu throttling.

[evgeny]