You can leave it on (or Dolby Atmos if you buy it) and it won’t make a difference for stereo sound. It’s only supposed to make a difference for 5.1 or 7.1 audio where it’ll simulate speakers around you. It’s great for shows or movies with surround if you only have stereo speakers. For games you may be better off using the headphones mode of the game when it has one and leaving that off.