Whenever I turn on Arma 3 all pc sound is disabled. It is only when I quit arma 3 that sound comes back.
Sound equipment description is.
Asus Xonar DG sound card via optical cable to amplifier.
This problem has not ever happened before and I first noticed it after the Marksmen DLC update.
If you need anything from me let me know and I will swiftly provide the information.