I can confirm this bug on Ubuntu 13.04 (latest update from December 5). The windows resize very slowly and the grey areas are very big. Furthermore there is a much too high cpu usage.
Compiz 0.9.9 (compiz 1:0.9.9~daily12.12.05-0ubuntu1) NVIDIA Driver Version: 310.19 (Graphics Card: Nvidia Quadro 1000M)
I am ready to help with testing.
I can confirm this bug on Ubuntu 13.04 (latest update from December 5). The windows resize very slowly and the grey areas are very big. Furthermore there is a much too high cpu usage.
Compiz 0.9.9 daily12. 12.05-0ubuntu1)
(compiz 1:0.9.9~
NVIDIA Driver Version: 310.19
(Graphics Card: Nvidia Quadro 1000M)
I am ready to help with testing.