This Samsung playback error issue has been going on for months now. Plex doesn’t seem to give an appropriate answer of the problem. They say they’re working on fixing it but since it’s been months, I don’t see this being corrected anytime soon. The best solution is to discontinue using the Samsung Plex app and purchase another streaming stick. I’m pretty pissed off about this because half of my Plex users use Samsung TVs and have complained that they can’t play most of my content. I have to tell them that it’s a Samsung issue and that they need to go out an buy new streaming devices. This is a huge mess.
See this thread here for hundreds of complaints regarding this issue: Playback error on samsung tv
