Terrible viewing performance with PDFs from CAD

It allows certain backward compatibility with older versions of Acrobat, making the file size somewhat reduced and lighter. At least in my personal experience. What i normally do after I finish a form with Acrobat pro, i save as optimize and compare file sizes between the optimized file and the origunsl. If the size difference is not significant then I use the save as reduce file size which allows me to also select backward compatibility with older versions of Acribat and even apply it to multiple files simultaneously during the saving process if I choose to do so. Then after my document is reduced in file size I save it as reader extended. For some reason tgis is something I discovered to work for me on my own. My forms have a lot javascripts and signature fields and dropdown menus that calculate other values to other text fields out of very extensive list items. It takes a few secinds for a form in adobe acrobat pro to do its job. But when i save it as Reader Extended my form works fenomenally faster than ever. See for yourself if this approach helps in anyway.