Comment 5 for bug 201596

I tried (as suggested) to use xserver-xgl, but brought no change on the issue.

I'm using an external monitor (with 1680x1050 resolution). Putting even a low resolution video to full-screen results in a playback with approx. 0.5 FPS.

If compiz is disabled Xv playback is (as it should) smooth and flawless.