https://stainless.corp.google.com/search?view=list&build=R73&test=video_PlaybackPerf.h264.4k&board=%5Eauron_paine%24&first_date=2018-11-27&last_date=2018-12-25&status=GOOD&status=WARN&status=FAIL&status=ERROR

failed on R73-11456.0.0 and R73-11462.0.0:

Unhandled TimeoutException: Timed out while waiting 30s for py_utils.WaitFor(lambda: self.oobe_exists, 30).

Could it be related to flaky OOBE experience?