Every time that I start Dorico, playback only works normally for a few minutes. Afterword, the audio starts to stutter and lag an extreme amount, and it continues to do this until I restart Dorico.
I will say I have also had this issue but I just assumed it was because I had a low end budget pc.
What audio device/driver are you using and to what buffer size is it set?
Try increasing the buffer size and see if that makes a difference.