Dorico 4.x audio engine initialization hangs sometimes on startup

Workaround = Force-Quit and restart, which almost always fixes it.

Additionally, Dorico sometimes randomly loses connection with USB keyboard controller. Workaround for this is to exit Dorico and restart, which always fixes the issue until it comes up again.

I cannot find any particular action on my part which would cause these two things to happen. Thanks, all!

Please do from Dorico’s menu Help > Create Diagnostics Report and post the corresponding zip file here. Thanks
Dorico hangs on start up when previously the audio engine did not shutdown properly.
The diagnostics might give me a hint why that happens.
Or do you shutdown Dorico and try to immediately start it again? In that case it will also hang.