Images require reloading to appear

Hi

This is a relatively new problem.

My site takes unusually long to load than it used to and images won't load unless I refresh the page. I'm not sure what is causing the slow down so I've tried removing a few things from the site that I thought could have been the culprit (Images and gif files).

It loads slightly faster but images won't load until I refresh the page at least once.

Can anyone help me with this issue?

Many thanks,

Michael