Hallo, welcomed to the club, the same here,
today I updated the kernel with the new provided kernel-source 2.6.27.7-4.4 (up today we are missing the -8.1 source
).
The NVIDIA driver (NVIDIA-Linux-x86_64-180.06-pkg2 works perfect).
glxgears shows 25153 frames in 5.0 seconds = 5030.556 FPS.
But compiz don't work.
Enabling Desktop effects, disappears the windows taskbars (or better is transparent), or the mouse pointer.
For me it's more likly a problem with compiz, than a NVIDIA driver issue.