https://bugs.freedesktop.org/show_bug.cgi?id=82050
--- Comment #40 from smoki smoki00790@gmail.com --- (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 :)