Comment # 6 on bug 71134 from Tom

Update

After updating packages to the latest versions (kernel to 3.12.0-next-20131111)
gpu lockups and dramatic slow downs seem to be resolved.

I've uploaded 2 videos which describe existing problems.

pixel offset on diagonal (which appears to be in opengl apps too):
http://youtu.be/jTnI446eD-Q

dpm issue: http://youtu.be/52ZlliTfqYI