Calendar very slow with macOS Monterey

Hi All,


Since the Monterey update the calendar is very slow, the wheel is there a lot. I tried to delete the com.Apple.ical.plist but it does not help here.


Anything I could do to troubleshoot here please?


Thanks


Jeremie

MacBook Pro 13″, macOS 12.0

Posted on Oct 28, 2021 5:31 AM

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Posted on Oct 28, 2021 10:25 PM

I use Apple Calendar exclusively (except when I have to create a meeting invite with others at work). But, I accept invites and such on my Apple Calendar. I have a number of iCloud calendars I sync with on three Macs and two iOS devices. All of these also sync with a work Exchange calendar.


I have been seeing this delayed event rendering on the iOS devices for a while as I'm on the iOS beta program. It was annoying but I made reports. The symptom was that I'd go to a day in the calendar but events would not be there but would fill in in a few seconds.


When I upgraded my Mac to Monterey, I started seeing the same annoying behavior on the Mac's Calendar app.


I unsubscribed to the Exchange calendar on the Mac. Lo and behold, the Calendar app was working like it was its old self. I tried unsubscribing on the iOS devices and, they too, started functioning nicely again. Just turning off the Exchange calendar in the Calendar app didn't do anything. I had to "unsubscribe" from the Exchange calendar.


Earlier in another thread, I through it was a client-side issue. I still believe that. But now, I am betting it is an Exchange client-side, either Apple's implementation or Microsoft's implementation.

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Calendar very slow with macOS Monterey

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