Just made a forum account to add to this.
I had no issues whatsoever since the EW release, today I downloaded the patch 6.0.1 and I have sound interference throughout the game (even in title screen/BGM in queue). Switching from DX11 to DX9 fixes the sound issue, but my hardware does not seem to like it because my game would crash with DX9 ever so often - not to mention that playing on DX9 is fairly...limited.

I have tried every other fix mentioned in this thread to no avail.
For reference (cause people claim its AMD related) here my specs:
CPU: i9-9900k @ 3.6GHz
Graphics: EVGA RTX 3070 XC3 Ultra Gaming
MBO: Asus ROG Strix Z390-E Gaming
Headset: Astro A40 TR