Ever since updating to Mac OS 10.12.1 codesign is very slow

Number:rdar://28962401 Date Originated:26-Oct-2016
Status:Open Resolved:
Product:Xcode Product Version:8.1
Classification:Performance Reproducible:Always
For each codesign task in my Xcode build chain it takes multiple minutes to perform codesign.  This amounts to over 10min long single build times.

Steps to Reproduce:
1. I updated to Mac OS 10.12.1
2. I Build and run a project for a tvOS device
3. I wait for a very long time
4. It eventually completes over 10min later.

Expected Results:
It should take as long as it did to codesign as it did on Mac OS 10.12.0.

Actual Results:
It takes many times longer.

Xcode 8.0 OR 8.1
Mac OS 10.12.1


Please note: Reports posted here will not necessarily be seen by Apple. All problems should be submitted at bugreport.apple.com before they are posted here. Please only post information for Radars that you have filed yourself, and please do not include Apple confidential information in your posts. Thank you!