Hi Ulrike,
How are you finding the Beosound 2?
I disabled all my Chromecast features on my speakers for now, because of the issues. I have been using Google Music and Deezer, but neither cast without them eventually stopping for some unknown reason. That also happens when using Google Home too. So the only reliable way I can play music at the moment is through the B&O app using Deezer.
If there has been an update overnight let me know and ill try out GCC again.
Take care,
David