witcher 3 artbook is around 1gb. adobe reader/firefox both are pretty slow while scrolling. need a fast/multithreaded/realistic way of going through the artbook.

thanks in advance

I haven't used Windows for a while, but Sumatra PDF was pretty fast and lightweight.

it's not really making much difference. the problem is the vast amount of images. it's only utilizing a single core, same as other pdf readers. i may need to convert/uncompress or something. not really sure how to speedily scroll aside from printing it out. it's on a fairly modern 12ghz cpu too.

Sumatra PDF has been my PDF viewer of choice for a long time. Its small and quick.

I'm not sure if you're jesting, but multi-threaded coding is, or at least last time I had to code it (6 years ago), not a simple task.

Sumatra all the way (Yes I know it's been said before)

http://www.sumatrapdfreader.org/free-pdf-reader.html Depends on the type of data. With data that changes, that complicates things. With data that doesn't change (immutable or read-only) then it's far easier since you can do tasks and then update compartmentalized sections.

I think a lot of multi-threaded (or fiber) based code is moving towards work that doesn't have to overlap, thus taking out the issues with locking mechanisms.

I can't say how well it works with your PDF, but in my experience mupdf has been absolutely the fastest and lightest PDF reader.