DOTA 2 is impossible to use with Mumble.
If I communicate through Mumble the game somehow transmits in-game as well (despite the applications having different push-to-talk keys or even if I turn off voice comm in the game). If I turn off voice communication in DOTA 2 it gets turned back on as soon as sound is transmitted through Mumble.
It's really strange and I am wondering if there are any solutions to this.
EDIT: What actually happens is that DOTA 2 lowers the microphone input level to zero (0) in Windows - and this is what makes it impossible to use any 3rd party communication software (I've now tried Teamspeak as well). Also the voice comm is activated in DOTA 2 if I push the key assigned to the 3rd party communication software _despite_ them having different activation keys.
Also. Please do not post your personal preferences regarding communication software but do only post if you know how to stop DOTA 2 from lowering the microphone level to zero, please stay on topic.