iOS 15.1 Calendar app is laggy and unreliable

Has anyone seen this resolved or gotten a fix from apple yet? January 2022 and I’m still experiencing this same issue with my calendar.

This issue only started for me with 15.2 and no it is not resolved

I’m in cloud calendar only (although multiple ones and a couple are shared) and I get this issue too.

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I'm trying to figure out what I can learn from this. This is what I've come up with:

1. Never install a major or minor release until a few weeks afterwards, and/or a few patch releases. Once this is patched, that'll be the version of iOS that I'm locked on for a long while.
2. Never, ever, ever allow auto-updates. Never. Not if you value ever getting any work done.
3. Apple has lousy regression tests for anything that's not Apple. They're seemingly completely out of touch with the reality of people who have Office365 at work. A lesson in how hard it is to do real regression testing, perhaps.
4. Apple doesn't care about fixing an issue like this (or even communicating) in a reasonable time frame. The app is UNUSABLE for Exchange users. It's UNUSABLE. There's no other way of describing it.
5. To preserve your own mental health, you have to expect this kind of stuff, pay attention to the top few points, and always have a backup.

So I started out being infuriated, now I'm just convinced they simply don't care, have broken QA when it comes to non-Apple everything, and to lower my expectations accordingly. Their hardware is fine; but I'll look to other software / cloud ecosystems.

If your calendars are remote (google, iCloud, exchange, etc.), may I suggest unsubscribing to them (turn them off in iOS), opting to delete the entries on the iOS, letting the process settle down, restart the iOS device, and resubscribing to the calendars, one by one. IN similar situations, this has worked for me.

Good luck.

aps

Same here. Reset all setting and did not correct the issues. Considering downgrading to iOS 14.x. Major PITA.

I have a similar issue and its when work added Microsoft Defender for Endpoint to my device. If i remove that my calendar works perfectly.

The 15.2 update fixed this for me.

Thanks for sharing this tip. It's a clunky workaround, but it actually works, unlike everything else that I've seen suggested.

Is there is any progress or solid reply from Apple side regarding this problem? I don't want to delete or reinstall any of my calendars. This bug should be handled by Apple team.

The latest IOS update fixed this for me! (15.2 19C57) calender app working fine with exchange accounts synced

Thanks Armando for the clarification, Any clue why the problem still exists for me? I’m using iOS 15.2