When using Outlook 2011 for Mac, the computer slows down randomly. We can start typing and for no reason the beachball will appear for an extended period of time.

We've archived all email older than 3 weeks, cleaned up caches, ran updates and rebuilt the mailbox but the issue persists.

It appears that the Microsoft AU Daemon is the culprit, but I have no idea how to fix it.

Any ideas?