Slow reminders Solved!
If your reminders app is running slow or dial keeps turning with or without a successful iCloud sync, simply follow these steps:
1- Open reminders —> choose “Completed” tab and delete all completed reminders.
2- Repeat step 1 on your other Apple devices.
3- Make sure there are NO completed reminders are left on any of your devices.
4- Look for reminders that didn’t sync across all your devices and delete them.
You can now use reminders without a hitch ✌🏻
iPhone 14 Pro Max