Plex has started to play up again. Xbox. Says Buffering whilst playing. (insider dash, FIXED NOW)

Another user has possibly found a work around using high contrast mode (I’m not home to test, but worth a shot): http://forums.plex.tv/discussion/312709/new-easy-workaround-for-current-xbox-one-issue-for-those-on-preview-program-high-contrast-mode#latest