I have a large LabVIEW project.  When I close the project - including if I just close it immediately after opening I see a dialog box that says "Compiling: <path>" and it takes a couple minutes to get through that process. It will scroll through all of the VIs in the project.
 
I have "Separate source/compiled" checked on all of my VIs in order to make working on a multi developer team easier.  But why does LabVIEW compile everything when I close the project?  Is there a way I can prevent it from doing that, it just seems to be a waste of time to compile it before closing.