Happens with Mumble, Teamspeak, Skype, everything. The volumes go to "max" and then ingame audio stops working: http://i.imgur.com/5O9atOR.png
If I mute Mumble, nothing changes: http://i.imgur.com/R1LTpuZ.png
However, if I mute Far Cry 4, then the audio levels in Windows go back to normal, but nothing happens: http://.imgur.com/gmEmZi9.png
Just to be clear, all audio works fine except for FC4 audio, nothing else stops working.
Thank you for your help.