Is tear free video playback possible with compositing enabled?

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http://forums.fedoraforum.org – I have to disable compositing in xorg.conf for video playback without tearing on my HTPC running vdpau with the binary nvidia drivers. Is it possible to have compositing enabled and still get perfectly smooth video? Compositing seemed to make remote desktop very laggy also. Fwiw Ubuntu seemed to suffer the same fate on this same machine. If it's not, is it possible to stop Gnome tray icons from gaining a horrible, white background when compositing is disabled? (HowTos)