Having seen your comment about Acrobat, I have made a small amendment to the add-in to turn off background mode printing to the Adobe driver. I have been testing it with my largest database of over 3000 records and it is well past 200 and still going without problem.
I have put the file on my web site temporarily at
http://www.gmayor.com/Forum/MMtoDocs Ver 5.0.dotm. See if this fixes the issue for you. Please let me know if successful so I may update the live version on my web site.