Blizz crashes when changes in settings are made

Hello everyone,

I wanted to buy a license but luckily tried the software first. Unfortunately it crashes on my PC (Win 10 build 2004) ever since I installed it. It crashes in more or less arbitrary situations. (Even with the update I installed last night).

I figured out, that it seems to happen often when a change in the media settings is made:

- change of video or audio source before and/or during a meeting 

- changes in the quality/speed settings

- starting a screen share

- When microphone is plugged in and the Realtek software pops up to let me identify the device

Is there any advice you could give me?

Thank you very much.