Not Picking Up Microphone

[Middle Little Brother]

Before anyone tells me "durr up your mic gain and it'll work fine!" or "just disable exclusive control", I've tried all of that. The mic works fine in literally every other game I've played, it works fine for Discord VC, it works on browsers. It is

ONLY

THIS

GAME

in which, for reasons unknown, the game won't pick up my mic. I'm using a Corsair Void Elite USB Headset. Any help would be massively appreciated.

For extra reference, I've recently been using a program called Equalizer APO to boost my mic to be more audible, but like I said, the mic works fine while using this for every other instance except this game. Discord, Chrome, TF2, all of em' work just fine. It's only this game.