I live in Fort Wayne, Indiana, and I've had Comcast service since January of this year with an X1 DVR and a Vizio 4K television set from 2016 (E-series I believe). I've noticed the muddy and generally unsatisfying PQ of Comcast's HD channels like everyone else on this thread (except for Comcast engineers), so I tried changing the X1 to output 720p this week instead of 1080p.
1. The guide (and all overlayed text produced by the X1) is much easier to read. Channel logos in the guide are crisper. There's no doubt in my mind that it just looks better and is much easier to read.
2. I think -- but it's so hard to be certain -- that HD channels in general look better when I leave the upscaling to the TV and not to the X1. After switching the X1 to 720p, I watched a variety of channels including USA (Modern Family, Law and Order SVU), ESPN (live baseball), TNT (Wrath of the Titans), and some other channel (Man Of Steel), and some local channels. On all of these channels, the muddiness seemed to be gone, there were very few compression artifacts and absolutely no macro blocking. Subjectively, the quality of the image seemed as good as what I remember on DirecTV and better than the X1 when set to 1080i or 1080p.
I'm wondering if anyone else can confirm the same thing? Unfortunately, I can't do a live, side-by-side comparison.
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