Quick eustion: I put together a Python Add-In consisting of a toolbar with menus, and inside the menus are buttons to add data to the open layout from our server. This works well in 10.2 -- the data adds to the layout right away. I'm now testing the same toolbar in 10.3, and it works, but the data takes forever (like more than a minute) to load into the layout following the button click. I tried adding the data from the local machine drive thinking perhaps it was a server problem, but am seeing no difference in performance. Anyone experience similar problems with Python Add-Ins in 10.3 and have a suggestion? Any feedback is appreciated!