In mac OS 10.12, Preview hangs & displays the spinning beach ball forever when viewing a Batch PDF created in AutoCAD LT 2017.
All other non-batch PDF files load without any problems in Preview. The same batch PDFs hanging Preview, open fine in Acrobat Pro.

This is on a 2011 iMac with 16GB of RAM, 240GB SSD & new install of Sierra. All the latest macOS, Adobe & AutoCAD updates have been installed.