Ran into this the other night. We normally run Plex with a playlist at night on the Roku with shuffle and it plays all night with no issues. When I attempted this on the XBOX, the videos start out fine, but after an undetermined amount of time, the video stops playing, just a blank background, but the audio continues. I have to back out and come back and then it starts working again. Is this maybe a setting on the XBOX timing out?