You have a 4k TV connected to Dish? If you do it must be a lousy brand, because the upscaling on my set makes Dish's 1080i noticeably sharper.
Then you must have had a Crappy 1080p tv.
You can't pull details out of thin air when they don't exist.
Upconverted content is taking a smaller picture it stretching it to fit a bigger one.
And then you see more details of a stretched picture beyond its native resolution is not better PQ.
In fact you see things you shouldn't see.
It's not rocket science.
If it was you wouldn't be able to buy it for $348 at Walmart.
Now some of you guys got me wondering If you even know what good HD is.
Sounds to me you think stretch o vision, grainy picture, over contrasting, over Sharpness and bright color is good HD.
And taking 540 or 720 depending on your tv, and stretching it to fit 1920 is the same as taking 1920 and stretching it to 3800.
It's taking something that's not there and spreading it over a larger area.
Acually in fact Dish's HD is 1440x1080 and now your stretching that to over 3800.
Yikes.
Only the 720p content is full res.