Blizzard, I just inform you that headsets on wifi/bluetooth mode do not seem to work properly. This bug has been reported several time by the community.
I am using Edifier W820NB and whenever I use them in WiFi mode, the game emits a metal sounds in the background. It is clear to me based on search carried out on Reddit and google that there are various bugs concerning the use of headset in wifi/bluetooth mode.
I wonder if Blizzard Devs could put some efforts now as they are working on a new patch that is coming soon.
Thank you! I hope you read my report.