Ubi Tech Support,
This is my first forum post.
I encountered this audio issue in the open beta.... Everything was fine until I respawned and exited the DZ area.
It's better for me to show you what the issue is with youtube video than explain with words.... see links below.

PC Spec:
Windows 10 Home 64 Big. Intel(R) Core(TM) i7-6700 CPU @ 3.4GHz
16.0 GB Ram
NVidea GeForce GTX 1070