Out of memory errors when creating PDF from entire website

I am using Acrobat DC 15.017.20053 and am receiving Out of Memory errors when trying to create a PDF from an entire website. The process loads approximately 8-10,000 pages and then crashes. The PC still has plenty of memory so that is not the problem. I have tried this on both a PC, and a MAC using the 64 bit version, and received the same error. Is there a limit to how large a website can be (this one is 18000 pages)? Is it possible to turn on verbose logging or any way to tell exactly what is causing the error?