Suddenly no sound - Corsair HS80 Max Wireless headset

[76561199581980485]

Since launching GZW yesterday afternoon (03.22.2025 / 15:50), I've had no sound on my Corsair HS80 Max Wireless headset (2.4 GHz / Dolby Access). However, everything was working fine in the morning.
I get correct sound output from every other game in Steam, in the browser, via Spotify, via TeamSpeak 3 or other application.
The headphones are displayed correctly in the GZW settings, but I have no sound.
If I turn on my Sony Bluetooth headphones and change this in the settings, I immediately get sound again.
All drivers (Nvidia, Realtek) are up to date.
I checked the installed GZW files for errors via Steam. No errors were found. I then completely uninstalled the game and also deleted all files in the app data. All to no avail. I checked the installed GZW files for errors via Steam. No errors were found. I then completely uninstalled the game and also deleted all files in the app data. All to no avail.

What have I missed, or is there suddenly a sound problem with GZW again?
(MFG)