People will leave your stream if your audio is not good. Alerts too loud? Leave. Music too loud? Leave. (especially if you are a DJ /s) Voice too quiet? Leave. Music louder than the game? Leave. You needing 100% volume while ads are fine at 20% volume? Leave. And they will never tell a word.
Streamers: fix your audio. Fix your audio. Fix your audio!!! Take an hour and do some test recordings. Compare your recordings to your favorite YouTube channel. Check for blowout. Check for clarity. Check for peaking. Move your head around and make sure you aren't muffling yourself. PLEASE