I'm going to make a let's play of this game and I remember I can toggle fullscreen with Alt+Enter, but if I do that when opening the game, it goes back to window mode when the intro cutscene starts. Is there any fix for this?

Edit: If I have an save file with fullscreen enabled, the game goes into fullscreen when the cutscene starts. I guess the best way to fix this would be to find a way to have the game on fullscreen by default.