Problems switching Live TV channels...

I am using Plex Server on a Mac Mini along with a HDHomeRun Extend and streaming to Apple TVs and iPhones using the Plex app. I have run into an issue with Plex when switching Live TV channels. Quite often, it doesn’t seem to turn off the transcoder/stream for the old channel when I switch to a new one. After a couple of channel switches I am presented with a “both tuners are busy, which one to cancel” type of prompt and regardless of what I do, Live TV will no longer work.

Surprisingly, restarting Plex Server doesn’t seem to help. When I look at all Plex processes running on the machine I see that one is blocked on some kind of wait_mutex that appears to persist even when I restart Plex Server.

The solution seems to be to kill Plex server, cycle power on the HDHomeRun Extend, and then restart Plex Server.

Anyone else seen this? It’s doesn’t happen every time, but it’s quite aggravating.

I have seen where plex does not release the tuner.
I cycle the HDhomerun device(prime in my case) which releases the tuner/tuners

I am having the same issue. Plex running on windows 10 and using the Roku Preview app. I can watch a few shows then I get errors that it can’t tune that channel. I tried power cycling the hdhomerun prime and that doesn’t fix it. I have to go exit plex media server (and kill any remaining running processes) and then start plex again and it works fine again for a few more shows.