I'VE FOUND A FIX!!!!
On Microphone Properties> Advanced> DISABLE "Enable audio enhancements".
It's working super fine, I can't believe it took me 6 months to try this.
Every time my mic is being used, other programs' audio will get momentously muffled when the audio is static and gets back to normal when a louder sound is played. Two examples I can give: in GTA V, driving a veicule with music off will make the audio get muffled several times; in Dead by...