Image post_content causes a timeout

Hello,
I’m trying to set up an image gallery with title, excerpt and content, and I’m unable to get the post_cotent for image to work. This is my code:

[each IMG]
	                 <div class="img-box">
				{@IMG._img.large}
				<div class="img-caption">
    				   <h5>{@post_title}</h5>
				   <p>{@post_excerpt}</p>
				   <p>{@post_content}</p>	
				</div>
			</div>
	[/each]

It doesn’t matter if I output it as WP Gallery or not, as long as I have post_content there, it throws me a 524 timeout error.

Any idea what am I doing wrong?