@K-1 it very well could be a bug somewhere. Through my research the devs can’t seem to find one so it is assumed for some reason on MacOS having 4x the pixels to work on performance may tank much harder then on Linux or Windows. Could very possibly just be a Mac thing who knows. This seems to be a workaround that works. Until I found this little hidden feature RT was completely unusable on my machine.
@TooWaBoo here are some screenshots of RT. The first is without the HDPI turned on the second is with it Turned on both look identical to me. The real take away for me is under neither mode is the UI too big everything looks the same as if I never changed to a low resolution mode.

