4k TVs have a beautiful, sharp upscaled picture from Dish, sometimes hard to tell the difference from TV's native app's Netflix 4k streaming. It's your TV. Have you set it to dot for dot (or the Tv's equivalent)?
I'm sorry, but what have you been smoking?! No way in the world does the DISH signal even come near to Apps, OTA direct and even DISH OTA. I have yet to get 4K from the YouTube and Netflix apps on the box, 1080/60i nominal from an H3 running U522 on a Samsung 55" SUHD QLED. I had the same problems when I got my DLP in 2008 and upgraded to a HD/1080i box on September 16, 2008. Boy do I remember that day. Although DLP can make anything look fantastic, there was a marked difference between DISH (flat and soft), DISH OTA (really good), OTA direct (Great!), Blu-ray (Incredible) and apps off the BDP (Still Incredible).
When I mentioned this same topic when I got the DLP and noticed the difference or lack of PQ, I was told that I would not get the PQ from the DISH box that you get from other sources. The compression and variance in resolution makes the DISH signal flat. Now I'm constantly messing with settings that I got the base adjustments from RTings.com, when using the H3 that i don't have to touch when using any other source. Just fired up Netflix off the H3 and put on an "Ultra HD 4K" program and it's coming over 1920x1080/60i. After reading a thread that spoke of this, I dinked around with the box and got a 4K picture for about 10 minutes. Not impressed. The recent U522 update only gave me accurate resolution markings on the programs, but not what's being said on the TV itself.
AND something I noticed when I first go my 4K is that commercials on the H3 are ironically bright, crisp and colorful. As the volume has been loud, the image is now "loud". I find that prophetically ironic.
P.S.
I have no idea where the link above are coming from. I did not actively place or can get rid of them.