Outlook Contact Issue Iphone 16.3.1

Good morning,

we have a lot of users that after upgrading iphone to the latest 16.3.1 version of IOS, have problems with their contact..they have more than 3000 contacts and the app continue refreshing contact 500 at time, then when arrives at 2000 it crash...and is a loop crash.

There is no way to solve the problem...i tried to create a new account, tried deleting app, tried with another brand new phone but everytime still the same problem.