OK I am leaving UT3. Effects dissaper etc...I dunno what causes this but this is mess....
really I am damn dissapointed, it's like it does it on purpose, if I solve something another problem appears....
EDIT: Meh got it finally fixed, but I thought I will really leave the game for while because of this...
I got also newest drivers now, not that it changed anything significant though.
But now UT3 even crashes while minimizing it..