We have a fix for the issue of DVR Live TV streaming failing sometime after start
The fix is in Plex Web and initially is available in the hosted Plex Web that is on https://app.plex.tv/desktop
See release notice for Plex Web 4.99.2
Fix live tv session stopped after a period of time.
The fix will get included in the Plex Desktop app sometime soon and will eventually also be included in the Plex Web app bundled within Plex Media Server
