I'm seeing long pauses happen in some 3d applications or ones that use opengl. I'm talking about complete system pauses, total lag of some sort. Compiz does this, it seems to degrade so that it happens more often and the pauses are longer. It doesn't happen for all 3d, but I assume for the ones that does it's the same bug. This seems to happen particularly when opengl is used for 2d like for playing video. It doesn't seem to happen with regular 3d applications like games and such. Is this known and is there a work around?