Viewport causing an app hang

 From:  LocusDio
9688.3 In reply to 9688.2 
Thanks for getting back to me so quickly, Michael. I do appreciate it.

Unfortunately I tried every one of those steps and the problem persists.

I first tried setting the DisplayThreadLimit to 1 before rolling back, unfortunately it was of no use both before, and after the rollback.

Let me know if there's anything else I can do to help resolve my issue.