Most channels work great, but I get severe blocking/artifacting (and audio problems) on a few channels.
After doing many of the online steps (checking all cable connections, resetting the box, resetting the ONT, etc. etc.) it seems like all signs point to some kind of signal issue. Is there anything else I can try before paying for a tech to come out? Even for the TV that is just 1 splitter off of the main line into the house, I have issues.
Thanks