Frequent Playback Errors

I have an HD Homerun Connect Quatro that i just bought to replace a HD Homerun Extend. I was having difficulty recording from some channels. Now I am trying to watch live tv on my Roku with the new Plex Pass beta release that just came out. 2 of my 6 channels play for a while and then they stop and go immediately to buffering 34% and after a minute or so, just says Playback error. It seems like plex doesn’t recover very reliably from frame errors that may occur from a digital signal interference.

Any suggestions?