Don't think there is a personal setting for that, but I changed the posts per page from 100 down to 20, which is consistent with THAT forum.
However, you can change your own setting to display newest posts on top, i.e. Page One of a topic now will have the latest posts and the newest shows up on top. That way, your screen does not need to finish loading all the pics for you to see the newest post.
How? When you are logged in: (top) Profile -> (left) Look and Layout Preferences -> Check "Show most recent posts at the top." and save.