I've had the exact same problem since the early access of EW, quite honestly this audio bug just completely shatters the immersion for me when playing MSQ. I've already finished the story and think it's quite amazing but however...I personally however refuse to watch the cutscenes ever again with this still going on. I feel like this has to do with Immersive audio pack being implemented into the game and it just basically messed up the sound engine (I never had these issues in Shadowbringers, it was only up until Endwalker was in early access). Guess we gotta wait and all I have to say to Square (I know they are busy or the 14 team is) but FIX THIS it's honestly ruining not just mine but so many other's experiences with this game and ALL it has to offer.