A huge set of images leads to sluggish performance

[PatrikFomin]

I'm testing on a page with around 500-1500 profile icons (think like a list of contributors for a project). Each image/icon is around 100x100px in size. After they have loaded there are very sluggish open / close animations when one of the icons is clicked.

lightbox = new SimpleLightbox('.gallery-lightbox');

They are rendered through an ajax call and each image markup looks like this.

Once all are loaded through ajax a .refresh() action is triggered.

[andreknieriem]

Hey. Can you give me a link to see it? Your markup is not visible too here.