Comment 39 for bug 763005

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Daniel van Vugt (vanvugt) wrote : Re: Compiz's "Sync to Vblank" makes display stutter/slow with some drivers (like fglrx)

I'm only fixing the exact problem described in the Bug Description. So the fix will only work for you if the workaround described at the top works for you.

Of course, if the workaround works for you then you could always have kept Unity 3D. Just turn off Sync To VBlank in CompizConfig Settings Manager and turn on Tear Free Desktop in ATI Catalyst Control Center.

Actually I found the workaround still has slightly better performance than the fix. This is because even with the fix, compiz has to wait for Vblank. But the workaround uses GPU/driver features to do the same thing more efficiently.