[Xtrem]

There's one. XD I knew I wouldn't be the only one with such a problem.

Here's Xtrem's tip :
In the upper part of the screen, there's a bar where you can choose he display to be wether 1 page, 2 pages, as large as screen, etc. Chose the personal adjustment, which is the last option. It looks like a page with a small white post . A little window will appear and, tadaaaaaaa, by moving the bar with the screen, you can chose 100%

If you didn't understand, I can make screenshots.