Here's what worked for me!
OS: Windows 10
Mic: HyperX Cloud III
Settings > System > Sound > (ok you have to promise to use your eyeballs for this next step) In between 'Input' and 'Test your mic' there should an option for 'Device properties' click it> aallllll the way to the top right should be an option for 'Additional device properties' > Now a white pop-up menu should appear > go to Advanced tab and change 'Default Format' to something else (I did 'DVD Quality' no clue if its specific tho) > Apply!!! > Hopefully your mic works now for this game!!
P.S. I changed my 'Default Format' back to what it was orig and im still operational
P.P.S. Sometimes you may need to go to the 'Listen' tab in the pop-up and turn on then off 'Listen to this device' to get your mic to work