Hello, I have found this thread in the beryl forums: http://forum.beryl-project.org/viewtopic.php?f=54&t=2796 it seems that the benchmark plugin almost eliminates the overhead created by compiz/beryl for opengl apps. unredirect_fullscreenwindows seems only to work on xgl [1] can something similar be added to compiz core to improve the perfomance of opengl apps running ontop of compiz? 1: https://bugs.freedesktop.org/show_bug.cgi?id=9474