I was watching S8E3 of GoT last week and it was a very dimly lit episode, which made all the heavy compression Comcast puts in stick out to the point where it was distracting, specially when you pause the show it looks like a heavily pixelated upconversion with colors washed out. I am using the latest 4k box and have all the proper 4k settings in place. I can see 4k HDR Youtube videos and they look spectacular, so it's not my TV or bandwidth. Comcast is doing something on their that is reducing the quality of content. I know this because when I chromecast the same GoT show from my phone to the same TV using HBO GO, the compression "grittiness" goes away and the colors brighten up, same TV settings (Cinema Pro mode in my Sony Bravia 900).
Am I missing something or is this a known issue?
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