My pixelation problem was finally solved after the whole neighborhood lost all services, TV, phone, and internet. I never got a straight answer from Xfinity as to the cause and their techs didn’t seem to know as they ran me through the same tests over and over and over. The issues started when Xfinity announced they had made big improvements in their service In our area. For the next 30 days we had a couple outages and constant pixelating culminating in the total outage. 3 days later everything is back to normal. It was a nightmare.
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