Large PDFs crash app/reader instantly

Used to be able to open PDFs greater than 250MB in size using the built in PDF reader without crashing, but after the update even the built in reader crashes immediately after trying to open large PDFs. The Readdle PDF reader has always crashed with large files, so I can no longer read my textbooks with this app at all. Running on iPad Pro 9.7 128GB.

Samp1800 about Documents: File Manager & Docs, v6.0