https://bugs.freedesktop.org/show_bug.cgi?id=51787
--- Comment #1 from Michel Dänzer michel@daenzer.net 2012-07-06 08:25:03 PDT --- FWIW, I suspect it's more likely (re)compiling fragment shaders than vertex shaders. Possibly related to constantly changing fixed-function emulation shaders, UT2004 seems to burn through those quickly (this also caused slowdowns with fglrx's shader cache when the game was new). Just an idea, maybe this is different.