I've been playing the game for about 3 weeks (love it!) and then suddenly today ran into a problem. The scaling settings (which was at 80%) reverted to 100% and now I cannot change it. I also cannot change the full screen vs windowed setting.
Nothing at all happens when I click on the full screen button. When I click on the scaling button it changes to 90% but no lower, and when I exit out of the settings it reverts back to 100% immediately. I've tried restarting, uninstalling/reinstalling, running as an administrator.