I think you may be right as I'm running at max clocks right now when watching a youtube video. It's not really a big deal for me, but how could I fix it?
EDIT: Just saw the post above mine. Disabling hardware acceleration in certain apps fixes it.
EDIT 2: Actually youtube is running at low clocks and voltages now. It was only at max clocks in youtube for a little bit when it first started playing a video.