[quote=&quot;Sauron&quot;]lately i'm trying to get back my ass to the game i hope the will fix the issue i have with UT99
thanks[/quote]
I have a Pentium D.  It's dual core and I never had that problem.  If your processor has any kind of feature that dynamically adjusts it's speed or over/underclocks it automatically, try turning that off.  I did have problems exactly like matt describes when I tried the Asus auto-overclocking thing.