Every time I open the game since Heresy launched, the game opens in Fullscreen, which I change to Borderless Windowed at 1920x1080. I don't change other settings, so I don't know if other settings are affected, but Window Mode definitely isn't saving. I have saved the changes and restarted the game and computer, together and separately, and the game still reverts to Fullscreen, shunting my windows around until I change them again to play in Borderless Window.