Scrivener suddenly hanging up during editing

Been running Scrivener 3.2.3 on Mac OS 11.6.1 with no problems for weeks. Yesterday, Scrivener started hanging up constantly while writing/editing. No other changes to computer. I can barely get through a sentence without it freezing and beachball of death for 5-10 seconds. Happening several times a minute.

Have restarted, reset PRAM, run disk first aid, and Clean My Mac. Closed all other applications. Nothing has solved the problem. Am unable to work due to the constant freezing/hanging up.

Have you tried looking at the “Activity Monitor” while all this is happening to find out what processes are active?