This has been a problem for me for awhile now, but I have refrained from posting here in the hope of being able to characterize the problem better. Unfortunately, I have yet to detect a reproducible pattern.
The issue is that when I start up Dorico 2 and load my project, playback doesn’t always work. Specifically, I load the project and hit the green play button in the upper right corner. Sometimes all is good, and playback starts as expected. About half the time, it doesn’t. Hitting stop/start generally does no good, and in fact can lead to hanging Dorico. Sometimes restarting Dorico after force quitting it works, sometimes not. Sometimes it takes a machine reboot (Dell XPS 15 Windows 10 home) to make things well. I’ve taken to running the task manager and watching Dorico’s CPU usage and waiting until it looks like Dorico has finished initialization. This too doesn’t seem to make a difference.
Race condition in the audio system startup code perhaps? Any Windows 10 and/or Dorico settings I should check?