Compiled PDF (from 8MP images) lagging/flashing whites/refreshes while scrolling through the pages.

Hi guys,
I would like to find out how exactly to optimize the pdf file so that I don't experience the problem mentioned in the subject line.
what i did was take pictures of a few documents (80% text, 20% images) using a Canon G12 (had similar results with a DSLR too), and compiled them into a 200page PDF, using medium quality in PDF complier.
after that, i used Clearscan to OCR the whole thing, + cropped the white borders to make it fit nicely.
however after saving the PDF file, scrolling through the images feels laggy, it needs to "refresh" itself every now and then, which appears as flashing whites.
how do i prevent that?
i'm extremely certain it's not the problem with the computer.
i have tried with a quad core i7 sandy bridge with 16gb ram and it lags. it lags on other computers as well. however, a normal ebook with images and text scrolls through smoothly. what is it that i'm doing wrong?
i am on Acrobat X Pro by the way.
Thanks!

Hi guys,
I would like to find out how exactly to optimize the pdf file so that I don't experience the problem mentioned in the subject line.
what i did was take pictures of a few documents (80% text, 20% images) using a Canon G12 (had similar results with a DSLR too), and compiled them into a 200page PDF, using medium quality in PDF complier.
after that, i used Clearscan to OCR the whole thing, + cropped the white borders to make it fit nicely.
however after saving the PDF file, scrolling through the images feels laggy, it needs to "refresh" itself every now and then, which appears as flashing whites.
how do i prevent that?
i'm extremely certain it's not the problem with the computer.
i have tried with a quad core i7 sandy bridge with 16gb ram and it lags. it lags on other computers as well. however, a normal ebook with images and text scrolls through smoothly. what is it that i'm doing wrong?
i am on Acrobat X Pro by the way.
Thanks!

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