DT taking ages to start up and won't verify since 3.8.5 update

Since the last update (3.8.5) DT is taking ages (20 mis plus) to open databases. I am on a MacBook pro M1. It looks like something to do with sysnicing with icloud (CloudKit).
I have also noticed that my main database is having problems verifying. I want to rebuild the DB but can’t back it up as it won’t verify.

Any ideas?

Thanks

Could you please launch Apple’s Activity Monitor application (see Applications > Utilities), select the frozen app the list of processes, choose the menu item View > Sample Process and send the result to support - at - devon-technologies.com? Thanks in advance!

What problems verifying?
What is reported in Window > Log?