@ Gary
700 hundred, all on one page? I hope you’re using using some page caching. Connections uses a little javascript to do the loading effect. The delay is only 1/10 of a sec. But if you have 700 images all on one page, I guess that works out to about 70 seconds … actually scratch that …
Which template are you using? If you’re using one of the default templates, those images will show right away. Only the templates that create the images on the fly have the loading effect, which then the above would apply. But if you’re using one of those templates and you have that many entries, I think you would better suited to use one that support paginated results.
Sorry, for rambling on, but I’m going to need a few more details before I can give a solution. Can you share a link to your directory?