oooooh, yeah, the resolution would explain it, of course! (Godot can give you relative mouse movement values in pixels, which i'm using to rotate the camera; obviously the mouse will cover move pixels in the same distance if the resolution is higher) (and of course i haven't tested the game on anything other than 1920x1080)
shit, i need to patch this asap lol, i hate to imagine how slow the camera rotation would be on resolutions below 1920x1080