The game does change resolution -- sorta. In my two test games so far, one just stretches ugly and also doesn't remember res (Terraria, it'll always start 1920x1080 no matter what I do) and the other just creates a black screen with a box the size of the resolution I asked for Not ideal.
So I don't mind changing the entire system resolution when I have to prior to starting because that does work and it's easy, but I do want to streamline it with hotkeys and there's my original problem, the hotkeys don't seem to work, even just sitting on the desktop.
edit: solved. Changed res via xrandr command and bound them direct in Moshka.Go to the full post