Perhaps someone is familiar enough with Windows 10/11 and TS3 to answer this.
I recently got in touch with an old friend (I’m old, too) who uses Windows 11. I am on Windows 10, as is my server. We both are using headphones for TS, so there is no ambient sounds that could enter the mics to create echo. When I would speak, his mic would trigger in TS, and I would hear myself. This didn’t happen to him, and I’ve had no issues speaking with others.
I believe Windows may be responsible for this, but I have no knowledge of Windows 11, as I’ve never used it. Maybe someone can throw some “maybes” out so we can check.
Thanks