Originally Posted by thefirstm
After you start GLXGears, then kill it again. This way, the two apps will not compete for GPU cycles. The card shouldn't throttle back down, though.
Not what I'm seeing - when I kill glxgears the card slows back down and the video starts getting jerky again. Restart glxgears and the video smooths out.
Might it make a difference that this is a mobile chip? Presumably it's throttling down to save power - any way to disable this behavior either temporarily or permanently?