> Last time I checked, RDP wasn't able to use your GPU at all unless you had a very specific, no-longer-maintained version of Windows 10 Pro
Not sure where you got that idea. RDP has been able to use the GPU for both encoding and the apps since Windows 7 era and both certainly still work on the current version of Windows 10. The main limitation I've run into is it's still limited to 30 FPS though.