If you’re having issues with buffering during playback there are a few things that will help us troubleshoot.
- Make sure secure connections are not required: https://support.plex.tv/articles/206225077-how-to-use-secure-server-connections/
- Enable logging to PMS (this resets when the app resets): https://support.plex.tv/articles/216955788-logging-for-smart-tvs-tivo/
- XML Media info https://support.plex.tv/articles/201998867-investigate-media-information-and-formats/
- LG model
- Sample of video https://support.plex.tv/articles/201035968-generating-sample-files-from-media/