I'm sorry, but the latest update didn't change any new mic stuff. There's a lot of requests and things to focus on, and I'm only one person. The mic issues are mostly the Godot Engine so I'm reliant on fixes discovered or suggested by people who know more about that kind of thing than I am. Some peoples' mics were fixed with 0.5.2 thanks to a pull request that fixed surround-sound setups not working. It sounds like I also need something that fixes high Hz not working. Sigh... I'm sorry that this is even a thing.
It's alright! The game is really great, and it's understandable trying to fix issues with a small team/yourself. I'm a patient person and don't mind waiting for things to be updated. For now, I'll just larp playing the game until it's fixed. Don't let things impact your physical and mental health too much! Remember to take a break. Thanks for all your hard work making such a cool, fun, and popular game!