Originally Posted by brebs
Yeah, but but then try an opengl game, or running mplayer with vdpau and perfect vsync (as opposed to the occasional slight stutter). I've also had it messing up the top-area of the screen when playing d2x-rebirth, which is pretty bizarre.
Composite is a problem-causer, with nvidia.
Works fine. KDE by default suspends KWin's compositing when fullscreen. (Unless you have over ridden or use some distro that disables it by default).