Our 2nd main TV is on a wireless PVR and the signal seems really bad. The TV shows, live or recorded on the PVR constantly freezes making watching anything pretty frustrating and unwatchable.
The downstairs TV is not that far away from the main Router AND we have one of the Mesh units downstairs as well. No other items seem to have connection issues, Laptops, Cell Phones, Tablets all seem to work well. Our SONOS system does not work 100% it too has the odd stoppage of music when playing internet radio.
Our 3rd TV which is basically directly under the stairs from the router loses it's audio only. the Picture plays fine but the audio will not play through the TV speakers and the unit needs to be unplugged and restarted almost every time it's used.
This has been the way since we updated our Optik hardware last spring (9 months ago). Yes, I've contacted the help service, without success. If it cannot be fixed we will drop the Optik account.
A few comments.
Once you have confirmed these items, requesting a technician to address your findings becomes the next step.