In the meantime, I can offer a few workarounds that may help you in the meantime.
You could try using a different microphone that is compatible with your headset. This would allow you to use both devices at the same time without the need for a virtual audio driver.
You could try using a different audio output device for your
diablo 4 item game. This would allow you to hear the game audio through your headset while still using your microphone for voice chat.
You could try using a different voice chat software. Some voice chat software, such as Discord, allow you to use different audio devices for playback and capture.