Looking for experiences working with very large PDFs

[Evan0000000000]

Hi all, I'm looking at using PyMuPDF to add text to certain pages of PDFs I don't necessarily control all the input options of. On paper this package has all the stuff I'm looking for, but in the past my attempts at working with PDFs with other libraries have fallen flat a few times when I go to run with a production file. Time performance isn't so much a concern as out of memory problems or other outright failures.

A "normal" file for me would be a pagecount, of several tens of thousands, several hundreds of MB on disk, fairly complex text and object layout internally.

Anyone using PyMuPDF for that scale of file?