Thread: Firefox 33.0.3 very slow?
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Old 11-09-2014, 07:46 AM   #4
HarryT
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Thanks, Jon - I was just coming back to say that I'd discovered that! Setting "layers.offmainthreadcomposition.enabled" to "false" and restarting FF does indeed fix the problem .

The bug is apparently related to the hardware acceleration in certain video drivers.
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