[Question] Cache document in the background

The "problem"

Hello! I've a PDF with more than 5000 pages. Luckily, zathura opens pretty fast, but as soon as I start to search a word with the / "command", zathura hangs and needs some time to react to it.

Question ("Feature request"?)

I'm wondering if it's possible to have an option where zathura is allowed to cache the whole document in a background-process or something like that to avoid the loading time if the user starts the / command for example.

What have you tried?

I went through man zathurarc but I couldn't find such an option or I was just blind at that time o.O