AutoCAD Inventor :: Delay In Resolve Link With Project

I got a support contact a customer due to delay in opening some certain designs. The client works with a single project file to all your machines projects, being:

 - 1 path in WorkSpace
 - 1 path in WorkGroup
 - 1 path in Content Center

After some testing I noticed that the drawings that had some missing file and fix the broken link needed had the problem of delay in opening. (9min for appears the resolve link screen) (simple drawing with 1view of the model inserted)

So I did a simple test.

Define a new project, the existing Default.ipj. And open the same file. To our surprise, the screen Resolve Link quickly appeared (30sec), quite different from the other project used. 

My opinion of this delay, the current project, contains over 1million files easily. And as in the case of an Inventor file lost link searches for the file in the paths defined in the project, eventually causes loss of time behind files.

Before course, I also performed the same test on file with the option "Defer Update" and even then there was a delay(7min) in opening the file. 

This visibly clear that, when using a project with a workspace without files, and open a file Inventor does not do research, trying to find substitutes for the file.

My question is:

The Defer Update should not simply ignore the model file and do not make the search, just opening the file? And also
Is there any way to set a file IPJ, with any paths in Work Groups, and Inventor, not to make a search for the file in other locations, just as it existed previously, and display the screen Resolve Link?