Hi All, 
We had some difficulties with archiving. We had a campaign to move to archive approx 200.000 instances. It was working very slow, taking 5-6 secs per instance. 
After some investigation, we found out, we can speed it up with an additional index on WFElementTasks. 
After creating the index - CREATE NONCLUSTERED INDEX IX_WFELementTasks_Finished ON dbo.WFELementTasks (WFT_WFHIDTaskFinished)-  it takes less than 0,3 sec per instance.
Dear Webcon team, please Include this additional index in future releases.
Thank you!
                        
