Whenever the microphone is used by some application, the speaker volume drops about 50%. Even if I open the sound device settings, the volume drops because the microphone will be activated.
I already tried to solve this by:
Windows 7 lowers applications' volume automatically : Sound --> Communications --> Do Nothing
Sound --> Recording --> Microphone properties --> Disable "Allow applications to take exclusive control of this device"
... but it didn't help in any way.
When I disable the microphone, the volume instantly goes back to normal and I do not have the problem anymore. Also, I am not using Skype. (found some related problems regarding that Microsoft crap)
The Sound Mixer volume settings do not change for any program when the problem occurs. Only the resulting volumes are halfed and the difference can be observed in the mixer (the green jumps indicating current volume output).
I am using Windows 8.1 and internal Microphone using Acer drivers. Microphone properties say that is uses some Realtek controller.
Please help to fix another Microsoft "feature". Just comment if you have any clue what the problem could be and I will take a look at it. Thanks.