My old crappy computer used to play spotify fine when playing full-screen online games. Upgraded my rig last week and now a few days ago I noticed it starts stuttering when I start playing a game and now it not only stutters but also makes the game lag. Even in offline mode! I've tried to disable hardware acceleration, disabled high-quality streaming. Reinstalled Spotify. Nothing helps.
As soon as I start the game, Spotify slows down and starts skipping (remember old cassette tapes when they got stretched, that's what's happening). As soon as I close the game, Spotify goes back to normal.