I have been trying to fix this for hours now. When I start up any game, from steam, uplay, or just browser games, my in-game volume decreases when one of my friends speak through the mic. I already changed my communication settings to "Do Nothing" on the playback devices option. But it still doesn't make a difference. I looked in game to see if there is any options, but no, I did the latest windows 8.1 update as well. The last the I did was unplug my headset and set it up again and re-installed all my games. I don't know what else to do.