How to disable the "Microsoft Exchange Add-in" COM Add-In
In Microsoft Outlook:
Then Options, then Add-Ins
When the Outlook Options windows opens, click on the "GO" button next to Manage "COM Add-ins" as shown below.
Next, find the "Microsoft Exchange Add-in" as noted below and click the "Remove Button"
Finally, close outlook, and reboot your computer. This should resolve any issues with Outlook Lagging / Hanging.