I wasn't aware there were resolution limits to mGalaxy. I have an odd problem--I'm using FCEUX for Nintendo games. First off, to load, it flickers several times before settling on a resolution and finally starting the game. Then, on exit, mGalaxy returns but it's only about 3/4 of the screen, with my desktop in the background.
I wonder if this is a resolution-related problem? I'm also on Windows 10, and running on a retina MacBook Pro (2880 x 1800) so there are a nother few variables... FCEUX is the only emulator that does this, so it could likely be a configuration problem in the emulator... Anyway, just wondering if you've addressed super high DPI screens, especially ones where windows typically needs to have the elements scaled to 200%.