Dorico becomes unusably slow after editing for a couple minutes

I’m writing for a quartet, and the only non-standard notation is microtones and a glyph for a multiphonic fingering. It runs pretty smoothly at first, but when I edit the score a little bit, it suddenly becomes so slow that every input takes 5 seconds to register. I attached a diagnostic.
Dorico Diagnostics.zip (3.7 MB)

I can certainly see from your diagnostics that Dorico is becoming unresponsive from time to time, especially after saving. Can you share the project you’re working on with me? If you don’t want to attach it here, you can send it to me in a private message, or email it to me at d dot spreadbury at steinberg dot de. If you email me, be sure to include a link to this thread.