I don’t know if this has been an issue in the past, I only just started tackling audio following the 4.7.2 update. I have an ambient sound placed outside an ambient volume, and when setting my exterior settings in my audio volume, I don’t hear any difference in sound when my player enters the audio volume, even when setting the exterior settings to crazy values or zeroing out the volume of items outside the volume entirely. Is there something I missed, that I need to activate?
Also I think you might have the functionality and purpose of the ‘Audio Volume’ a bit misunderstood. It is essentially used to manage the transition of certain ambient areas so you are able to hear sounds differently while in the volume versus hearing all of the sounds with the same ambient feel.