Hello Lars,
did you find the time to ask your engineering in the meantime?
I don‘t understand that other apps runs with 44.1 kHz but some are not. And it‘s very curious that I‘ve the problem always. That means it plays no role if I use headphones or not.
If you confirm me that the problem doesn’t exist in Cubasis 3, I would buy the newer version. Otherwise I wouldn’t purchase any Cubasis versions anymore. So long the problem exist it makes no sense for me.
I hope you can understand this.
Friendly greetings marshMellow