Bumping.
Recently getting an error message from Amazon when starting a video to the effect of "your browser does not support high definition playback due to your browsers restrictions".
Browser is up-to-date at the time of this posting: LVL 2 (core: 75.0.3969.259
Graphics card, as well as, Win10 are both completely up-to-date.
Also, turned off "force dark pages" as this was causing video frame rate drops to stuttering.