Big pages or articles don’t display

Dear community

I have an issue wich might be resolved with just a setting I guess but I need someone to point me in the right direction.

When creating long/big pages or articles they don’t display. When I publish the page only the title is diplayed. When I go back to edit the post, all the content is gone.

What I’m doing is using pages to display images. I get this problem at about 80 – 90 images (thumbnails with links to the bigger image behind). I did some tests and it really just seems to be some kind of limitation of the maximum lenght of a post.

Any help is greatly appreciated!

Thanks

Patrick