I’m the other user whose post was deleted. (I did not delete my post). I continue to have this loading problem and I have upwards of 30 posts per page.
What I see is that the first post will load the image but then no additional images will load until I scroll the page. I have a 4 column layout so what happens is the image loads for the first column and the remaining columns plus any visible posts below the top row do not load. I’m seeing this using two unique short codes and two different groups of posts.