I was just on a developer group call the other day where another developer from another organization was having weird scaling issues RDPing into the vendor's sandbox. The solution was to adjust some buried registry setting on the remote machine, not fiddle with the local machine. Unfortunately I paid little attention to the details as I rarely RDP and when I do I can tolerate display issues.

I realize this is super vague, but it was so fresh in my brain I had to respond. Maybe someone who actually knows something can provide actual details.

On the occasion where I _have_ to use it I don't set it to fullscreen, just have it as a floating app at whatever resolution I care for. Then I just deal with the lower real-estate for however much time I need to be using it.

Nearly all of my remote work is SSH or SSHfs-based now, which (if you're used to terminal stuff) is so much nicer than any equivalent I've found on Windows.