I get PDF files from architect's that are usually based on 36" x 24" or "D" page size. These PDF documents can be anywhere from 10 to 100 pages and when viewing them in Preview, they are slow to paginate, move and zoom in and out. When viewing the same PDF files in bootcamp, they fly, no issues at all. It definitely is not a hardware issue (i7 2.93 iMac and no issues on the windows side) so I can only assume it is an issue with Preview and how it renders. Is there any setting that can help this along? Or maybe even another "free" program to use? I've seen another post that suggested doing a save as to help with speed and it does work but it is still really slow compared to bootcamp. Thanks for any and all help.