I got my PC37x about a month ago primarily for playing CSGO, and being able to hear my soon to arrive baby while on. It worked fantastic for about a month, and this weekend the microphone stopped getting picked up for in game chat. It worked PERFECT till then. Nothing was unplugged or changed. I have to place the mic basically at my mouth to get any sound at all, and it is so low quality team mates can not understand me. Before this happened, having it too close was the bigger issue, so it is odd that nothing is getting picked up.
I attempted plugging it into different ports, and checked my drivers. I can't find a reason this should have stopped working. It was great till it stopped.