The installer left my Hopper on 720p. I did not realize it right away but the picture was on the soft side. When I switched it to 1080p it snapped to life! I 'only' have a 1080p display.
Here's an odd question, and yes I have an 'old' HDTV, in fact all four are non 4K and have Hopper 3 and 3 4K Joeys and they all work... but back to my question... is the guide 4K? Like is there a noticeable difference in how the guide looks on a 4K tv compared to regular HDTV? I am not talking about upscaling which might make a difference, but is the actual guide itself 4K? Does that make any sense?
I noticed on some of my non-4K tv's I had to adjust the screen position. The exercise where you make sure the circles are fully viewable in each corner.