Unable to tune channel after 3 hours until I reset PR2100 NAS

Using my new Amazon Fire TV, HDHomerun Quatro, Plex Media Server installed on NAS PR2100. I am able to play my recorded show, but when I attempt to change channels, I get the “Tuning Channel” screen, which will stay there, until it brings me back to the show screen. When I reset the NAS, it works fine.

I have all the latest software installed.

I checked the NAS, and disabled the sleep feature…

Any ideas?

Wow, what a slow forum!