Crash on OCR Scan of Large PDFs

I'm looking for insight into causes and solutions surrounding crashes during OCR scanning of large PDFs in Adobe Acrobat Pro DC (Windows 10). 

I understand this topic has been discussed before but I am looking for some general guidelines as to why this tends to occur.  My work involves reviewing extremely large PDFs, frequently over 500 pages, often in the several thousands.  OCR character recognition is a very useful feature, but (as other users have indicated), Acrobat will crash unpredictably during the Recognize Text scan.

Generally speaking, I'd like to know why this tends to happen.  What is the bottleneck, or common cause behind this problem? Is it the inflation of the PDF file size after OCR?  Is this something I can fix with dedicated hardware?

The common cited solution of breaking the PDF into smaller sections is just too tedious and impractical to use in my situation, especially when I'm working with a 2,000+ page PDF, because there is no "answer" as to how small the sections need to be to avoid crashing.   Another point: (probably like many other users), I have no control over how the PDFs I receive are scanned, as they come from a variety of sources and were presumably scanned by different methods.

Thanks for any insight into this problem.