Comment 19 for bug 773861

A potential workaround to either bug is to reduce the sample rate of your mouse to about 2x the refresh rate of your monitor. It's normally about 16x by default so compiz and xorg have to process up to 16 window movements every screen refresh. Obviously you can only every see 1 movement per refresh on the screen so it's a waste. But I recommend using 2x the refresh rate to ensure everything stays smooth. Sorry I haven't researched/tested how to do this yet.