If anyone is experiencing an issue with the iniBuilds A320N on Xbox Series X where the cockpit suddenly gets extremely loud — like an overpowering engine or rushing air noise, even while on the ground — I’ve found a temporary fix that helps.
Pause the sim, open the settings menu, wait a few seconds, then back out and continue flying. I’m not sure why this works, but it consistently makes the cockpit much quieter and more pleasant, especially on the ground.
I’ll try to get a recording of the issue next time because it’s a bit hard to describe in words. But if you’re having the same problem, give this a try!