compiz jerky when twinview enabled
I am using compiz on two 1920x1200 LCD panels. When TwinView is enabled, compiz animations are slow and jerky and use a lot of CPU. If I switch off TwinView by reconfiguring X and restarting, or by switching to a MetaMode with only one screen (I have Option "MetaModes" "1920x1200,1920x1200; 1920x1200,NULL") and restarting compiz, they become smooth as butter.
Any idea why this might be? I am using the 9746 drivers on a Quadro NVS 285 with X.org 7.1.1 on Ubuntu Edgy.