Is it possible to run UCCNC in portrait view without it stretching? I changed the screen size in the Screen Editor page but it just shrinks it vertically back to normal size. The problem I'm having though is that it stretches back to 1080 wide which puts 1/3 of the program off of the screen.
Yes, it's possible, but you have to redesign the whole screenset. The screensets have fixed positions and sizes, so with the default screensets there's no room for all controls.