3D Audio in Photon Voice 2

Hello again, we have gotten voice chat to work with our VR application. Just like last time, we are stilling using Unity 2018.2.13f1 and Photon Voice 2 with PUN 2.

Now we are moving on to try and simulate 3D audio when the players are talking to each other. I think there was a post mentioning that the best way of doing this is by making use of Unity's Audio Source 3D Sound Settings. However, this does not seem to affect the sound at all. We have tweaked the values and tried the different rolloff options, but it still sounds the same wherever you stand in the world. Does anyone have any experience with this that might help?