Is there a way to improve the loading speed of the app?

When I open Goodnotes it takes a while to load the library so that I can choose my notebook, or if I had a notebook open last, it takes a while to load that. During this time the app seems to be frozen. It does the same thing when I'm switching back and forth from another app back to Goodnotes.

Sometimes Goodnotes opens immediately, other times it can take up to 20 seconds to load, which is a long time to wait when you need to take a note down quickly or youre on the run.

I do have a lot of pdfs in folders in Goodnotes, which is what I have attributed its slowness to, but I am sure most people who use the app daily have a lot of pdfs as well.

Thank you!!