calaccessd cpu usage ventura on intel i7 MacBook Pro

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I my setup, I have 1 sources - iCloud.

If I suspect correctly - would suggest disabling ALL Sources except iCloud ( assuming iCloud is used )

The Test if the issue disappears

Then, add one more source and test again

Keep going and testing until you discover the Source or Combination of Sources that are causing this issue

At that point, the user has options open to them but Only the User can decide what works Best for them

Really annoying. For me this seems to be linked to syncing with Exchange calendars, and adding delegates (i.e. delegated calendars). I've reset calendar cache, stopped/started the calendar agent, removed accounts, restarted, readdded accounts, and the issue stays...

Is the Calendar Application syncing with and associated with more than one source ?

If so, what are the Sources by Name

Indeed a problem with Exchange calendar. Tried deleting the internet account and recreating, updating to Ventura 13.3, nothing seems to help...

Correction, eventually the newly recreated account DID came through, after a serious CPU overload...