Microphone issues

Hello,

I am having issues with Microphone on Zoom, when I try to talk my mic for first second works fine and that it either goes very quiet/no sound or makes some weird noise. 
I recorded video what happens when testing mic, couldnt host it here as zoom does not allow to upload .mp4 files.
Here is the link: https://streamable.com/idazt3

My laptops microphone works fine without issue on MS Teams, Skype.
I tried reinstalling app, tried all the possible settings on Zoom, but still having issues.
Tried reinstalling Mic drivers, still same.
I work as IT support/Sytems admin so I know a bit about computers, but can't find whats the issue with this. 

It doesnt show any issues on Event Viewer in Windows. 😞

Please help me.