Here goes me being stupid on the forums again. ¯\_(ツ)_/¯ So when I'm playing osu! I notice during the songs the sound changes slightly like there's some kind of filter change or something. I probably should be reading patch notes, but I figured this would be quicker. I think I noticed it coinciding with kiai (idk how to spell that) once, but that could've been just a coincidence. Thanks.
osu! version: 20180323.2 (latest)
osu! version: 20180323.2 (latest)