Originally Posted by BashfulTux
You installed the correct driver. The behavior you see is normal and happens whenever you switch the focus from the glxgears window to another
Thanks for this info.
if you look at my output below you can see the difference where I switch the focus and then back again.
28043 frames in 5.0 seconds = 5606.772 FPS
Whow! What kind of system are you using?