calendar-server: Constantly restarts ECalClientView-s

On my Pop OS 19.10 system, evolution-calendar-factory uses 20-25% CPU all the time. This is pretty tragic for my battery life. I didn't see it reported here; I apologize if this is a duplicate report.

I don't know much about how EDS does its work, but I did make a perf flamegraph of where the CPU was going. Hopefully this is helpful in at least narrowing down what's going on!

Other facts:

• The process is not crashing. They run like this for hours or days.
• It does not seem to log anything to the system journal.
• gnome-shell-calendar-server seems to be running and consuming CPU as well, in the 5-10% range.
• The computer in question is a 2.20GHz 12-core laptop, so that amount of CPU represents significant work.

Please let me know what other data I can grab!