I use Windows 10. I already tried the steps in https://superuser.com/a/368007/269574, https://superuser.com/a/475868/269574, and https://superuser.com/a/851874/269574.
But this complication lingers. Whenever I use Google Hangouts and start speaking, within 5 seconds, 'Microphone Array' automatically decreases to random integers below 100.