Tonight trying to enjoy Celtics-Raptors game. Impossible with contstant blurriness primarily in middle 50% of screen from left to right. Player faces, legs, jersey numbers..all randomly blurry. This is 2nd consecutive experience with this watching a Celtics game. No issues prior to this. My TV is a Sony Bravia 55" 4k .. purchased within last year. Cables are fine, TV has had zero adjustments. Now, in my googling, I see avalanches of threads about Comcast and "compressing" amd MPEG-4, etc.. Please, someone tell me this issue is going to stop?????