DataPrep Memory Leak?

I have a fairly large scene. Casino site with lots of tiled landscape. But when I use "Dataprep to import groups of fairly light objects (Bar that has about 30 objects and totals less than 60k in polygons, results in extreme loading times (about an hour on 32 gigs of RAM). Also tested on a machine with 128 gigs of RAM and it took about 5 mins but used 100% of the RAM.

Importing the classic Datasmith import option loads the file In less than 20 seconds and doesn’t use all the ram. Is there a memory leak issue with the Dataprep importing into large scenes? This also happens with other datasmith files importing into the same scene.