Both are doing it, so Im wondering if it is signal related, but both are showing 99% quality and high 90's strenghts on all 3 mux's

Anyway, its ignoring button presses on the remote for several seconds frequently. Anyone else seeing weird things. Seems strange that 2 boxes purchased ages apart would have the same problem at about the same time. One is in the garage so hardly ever gets used and I just noticed it today when the inside box has been doing it for a while now.