Adding Item to Takeoff taking 6-9 seconds in Estimating 18.11

After upgrading from Estimating 16.1 to 18.1 we have seen a drastic change in how long it takes to add a Item to a takeoff.  When we choose an item to add, it takes 6-9 seconds to add that item to the Item Takeoff screen.  in the old version it was almost instantaneous.  Are other's experiencing this same length of time adding an item?

We have gone through the usual suspects...

- no antivirus/firewall causing the issue (disabled both and still having the issue)

- no malware of the clients

- We far exceed the requirements of the server/sql/drives/etc for it

- not isolated to a single user, happening to all users

Interested to see if others have the same "speed" when adding takeoff items.

Thanks!