Windows 10 Automatically changes Sound when Microphone gets enabled

Dear Comunity,

I am an IT Technician with 7 Years of experience and I'm on the verge of giving up on this one:

When my microphone gets activated, the output audio quality and volume gets changed. I have noticed that throughout different Versions over several Years.

Some examples:
I open Adobe Premiere. Premiere uses the Microphone -> Sound quality and volume worsens. (Perfectwhen editing video)

I start a Skype call. The Volume goes down and the sound quality worsens.

I start Nvidia Instant Replay recording, the Audio quality gets changed. Thats terrible behavior.

As some might suggest, there is the "Communications" tab within the advanced audio settings. But it is already set to "When windows detects communication activity -> do nothing".

My Windows Version is 1909 - 18363.900



Does anyone have an Idea on how to change that behavior?

Best Regards,

Julian

this may help
How to boost Mic volume on Windows | Tandem Help Center