was this ever solved? because i'm having the same issue, which is annoying.
Viewing post in Program Stopped Responding to my Mic
Not yet anyways.
Since I'm actively streaming, I couldn't wait for a fix. So I had to switch everything over to Veadotube Mini.
It doesn't do the kinds of dynamic animation you can get in PNGTuberPlus, but it's reliable and easy to use.
Hopefully this issue gets solved one day and I can return to it, but for now I've had to shelve it.