I have 2 laptops and 2 phones that are all on the same iCloud account. Every couple of weeks, the reminders.app goes out of sync.

I've tried all the apple suggested steps (https://support.apple.com/en-us/HT203521), none seem to solve it.

The only reliable method that has worked for me is if I wait about half a day, eventually it'll resolve itself.

Have you found any method that works in the short term?