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Rocket Surgeon
Join Date: Feb 2005
Location: Whitby
2021-11-17, 11:34

I'm finding, since upgrading the software on my devices, that my Calendar is very slow and laggy, especially on the Mac. Is anyone else getting this? Lots of beachballs, calendars failing to populate when scrolling through weeks, or even long freezes when viewing as weeks.

I do have a couple of sources, an Exchange server and iCloud.

It was entirely trouble-free in Big Sur.

CPU seems to spike to +100% for Calendar when this happens. Memory consumption seems reasonable (approx 150mb)

Has anyone else experienced the same in Monterey / iOS15?