:blush:

Sorry - not much useful in our resolution.

This issue was related to a service broker job that was running on the server very frequently. Most of the time it caused no issues but every now and again it seemed to block everything. We never really got to the bottom of why. It didn't need to run as frequently as it was so we could fix the issue with a new schedule. Understanding the details of why it had this intermittent impact lost priority.