And the “WinXP” thing is cause (I don’t know why) it reduces the UI lag as written about some posts above. Otherwise there is a 1-2 second lag between clicking something and an action happening, which can be pretty annoying. A similar thing happened with another indie game I played (Streets of Chaos) only there the lag was 5 or 8 seconds, making the game unplayable, while setting to run as WinXP reduced it to 3-4 seconds.