It seems that my OTA watching a program delivers really poor quality, the AMP says lost digital input, the screen is scattered and viewing is quite impassible. I rescan the channels and it get a bit better for some time.
What is troublesome is that if I also have recorder the above mentioned TV program, it will play back perfectly, no loss in picture nor audio.
No I am not recording one channel and live view another.
My setup is antenna straight into Roamio and then to TV and AMP.
It does get old to start every tv evening by rescanning the channels.
I do get by with record my anticipated viewings. But I really would like to have perfect sound an pic whenever I watch.