Hmm yes I just tested it, there is 0 lag, and my other play testers have 0 lag as well.
Can you please give more details? Are you using native windows? What screen reader are you using? Do you have a monitor? Since it works on other blind users screens I can only assume it's a computer issue without more context.
Then if you check out the description of the game it does include this:
There are tabs on top, then each tab has a list of sounds and you can modify the audio level of each individually. For audio that is attached to moving things, this is the "loudest" it can be.
I do appreciate you taking time to give feedback, but I do need some more details! the sound menu is there in the main menu, and need some specifics on system so I can determine source of lag.