Audio from Microphone Repeats - No External Speakers

This one is a little odd.
We are getting an echoing - but not from open mics /
speakers. It's like the audio is being re-routed into other audio
streams and we have no idea why. I'm working through the soundmax
drivers now.
I'm unable to get any consistent points to determine what is
happening, but it is not speakers / open mics.
Has anyone else had an echoing - more of a repeating - from
microphones?
TIA, I've found nothing from my web searches yet.
-SR

The sound / audio set up for the computers with this issue had the recording properties enabled within the audio settings - effectively re-broadcasting all of the other User's microphones within the session.

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