[okular] [Bug 492529] okular is very slow opening some PDFs

[William Bader]

https://bugs.kde.org/show_bug.cgi?id=492529

--- Comment #6 from William Bader <williambader at hotmail.com> ---
(In reply to Justin Zobel from comment #3)
> I've just opened this PDF in Okular on two different devices, and it loads
> within 1–2 seconds. Are you able to boot a live ISO of another OS and test
> the file there? It might be some tuning thing on Fedora that is causing the
> issue.

Thank you for the reply.
Is it possible that I set something wrong in okular?
I have the default settings, except since my laptop has a cpu with 20 threads
and has 64 GB RAM, in Okular -> Configure -> Performance, I set Memory Usage to
"Greedy".
I also currently have
CPU usage: [ ] Enable transparency effects (not set)
Rendering options:
  [x] Enable text antialias (set)
  [ ] Enable graphic antialias (not set)
  [ ] Enable text hinting (not set)

I use okular to read long documents. I want the text clear, but I don't care if
the images aren't as clear as possible.

My Linux installation runs X with Mate Desktop (Wayland isn't an option with
Mate), and I think that I have X configured to use the built-in Intel GPU
primarily while making the nvidia GPU available to applications.
My laptop has a 4K (3840x2160) display, and I use mate-tweaks to configure for
hidpi. 

I think that my hardware and OS configuration are ok because evince and atril
open the test page in a few seconds, maybe about 30X faster than okular, but I
am open to suggestions.

Regards, William

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