Pixelation issue is STILL ongoing

We've had several techs out to try to resolve this pixelation issue with no success. The most recent was Friday 1/5/24. The tech replaced all cables inside the house to the main TV and cable box. He tested all cables for signal strength and found everything to be fine. This only happens with broadcast stations, ABC, NBC, CBS, FOX, all cable news channels also. Apps and DVD player all with no issue. The cables/connections at the house outside have not been checked recently, to my knowledge. Nor has the main box in our culdesac.

If this forum is monitored by Xfinity, HELP

LYNNWOOD, Wa