using Roku ultra x4800 not set top box.
Not using a avr was just testing out the spectrum hooked directly to the tv, hdmi cable set roku to auto first , then tried 720p because it’s compressed video. I’ll Try other settings but it looks horrible.
Using
Spectrum app , I tried Netflix it looked fine, although not perfect but far better then cable .Blu-ray look fine except hdr ones because it’s not a hdr tv.
I specifically stopped using it because u verse looked bad on it, parents switched to spectrum and it barely looks any better it’s so blurry pixelated..
I’ve watched plenty of movies hundreds Blu-ray/ Netflix it’s the spectrum cable that’s bad.