Open Radar

 
Summary:
If you have a contact in your phone book that has more than a handful of phone numbers the contacts app hangs for a long time before it (mostly) recovered and is usable again. 

The bug started with iOS 8, there was no problem in 6 and 7.

Steps to Reproduce:
1. Create a contact in your phone book (via source code) (source attached)
2. Add like 100 phone numbers to it (via source code)
3. open the contacts app
4. open the contact

Expected Results:
Contacts app should be usable and display the phone numbers added

Actual Results:
Contacts hangs for like a minute

Version:
iOS 8.0 to 8.1 Beta 2

Notes:
The problem exists on all kinds of different iPhones and different version of iOS 8.

The same contact (synced between devices) that doesn't open on an iPhone 6 opens seamlessly on an iPhone 4S which is running iOS 6 or 7.

Configuration:
Tested on iPhone 4 up to 6

Attachments:
'ViewController.m' was successfully uploaded.