Export collection to catalog and reimport extremely slow
We are using the latest version of Adobe Lightroom CC (2015.9 - Build 1106920) on Mac OS.

When we export a collection as a catalog to an external hard drive and work on that catalog on another computer (Picks and Ratings) and then try to reimport that catalog, it takes forever.

It used to be much faster. When I mean slow, the import of pictures can take a whole night.
Is there a better way to do it. All we do on the other computer is picking and rating images.
Also, is there a way to export a collection to a catalog with the publishing services settings?
What is the max size of images of a Lightroom catalog?
Peter
