EDIT: After letting my desktop sit unplugged for 2 weeks thinking it might be something there: problem is still present.
OBS records my voice fine with my mic, so it still works and functions as it is supposed to- but PNGTuber+ isn't connecting still. At this point idk what to do other than buying another mic and hoping PNGTuber+ likes that one, or swapping to a different program for avatar&mic connection which really sucks.