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[Daniel van Vugt <daniel.van.vugt@xxxxxxxxxxxxx>]

Newfie, thanks for the detailed report.

I can't reproduce any such lag yet. But I have more (slower) hardware I
have yet to test...

Do you have ccsm > Workarounds > "Force full screen redraws (buffer
swap) on repaint" enabled? Please try with and without that option.
There are reasons why that option might give you more, or might give you
less lag. It might give you more because it allows compiz to pipeline
rendering of multiple frames before they're actually displayed, hence a
couple of frames lag. It might give you less lag for the same reason
though -- because more of the work is offloaded from the CPU to the GPU
and the CPU can better keep up.

** Also affects: compiz-core
   Importance: Undecided
       Status: New

-- 
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https://bugs.launchpad.net/bugs/1005152

Title:
  Sluggish performance when using Compiz (Unity, GNOME Classic)

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