Logic Studio apps Mainstage 3 takes a long time to save


Just upgraded to MainStage 3 and suddenly experience extremely long save times. Consistently takes just over a minute to resave a concert using Cmd-S onto an internal SSD drive. I'm accustomed to this taking closer to 10 to 15 seconds, even to an external drive.

Have tried recreating the concert, doing a fresh reinstall of MainStage, as well as testing the same concert on a different computer.

Has anyone else had this issue?
Yes, although this happens even after I've done a save with assets. It seems to take much longer than performing the same function in MainStage 2.2.2. Other than that, the file is behaving very solidly.