So the LG TV is also on your LAN is that correct?
It sounds like there’s some networking issue since the update.
Let’s have you enable debug logging, then carefully power cycle all your internal hardware. Router then switches then PMS then clients and TV.
After PMS comes back up for 6 min., try to play something on the TV for 30sec. Then stop playback and wait 30sec. Then go into http://app.plex.tv/desktop and Settings > Troubleshooting > Download Logs. Zip up and attach what it gives you so we can check your system for errors.
Below is how to enable debug mode logging only:
This topic was addressed by the team in this post. Click the link to see it formatted.
