(In reply to comment #39) 
>  If you let it run with Basic theme and few rounds you will spot i guess
> that only first round there is unusual maybe 2-3 times 1-2 sec stutters,
> then second time and later it is stutter free.

 Andy, you have behavior like that (more or less those seconds for stuter) if
PIPE_USAGE_STREAM is reverted, right?

 Then maybe that is the right way to go, global performance will suffer a
little but if nothing better can't be done then revert of PIPE_USAGE_STREAM is
OK :)