Microphone fades out / lowers on its own

[Avidity]

Hello, I have the Asus Maximus VII Hero and I'm currently experiencing an issue where if I talk in Ventrilo my microphone volume lowers until it fades out and then fades back in. Is this a drivers issue?

I have downloaded the latest drivers and do not know how to fix this. I also tested another headset and the problem persists.

I haven't noticed it happening in any other program that I'm aware of but will be sure to test it out.

Any help is appreciated,
Avidity