Site loading slowly

Hello everyone,

I was wondering if someone could help me with an issue which has just developed on the site mindfulpresenter.com

For some reason, the site has just started loading very slowly. So slow that the layout is visibly different for a second, before the proper layout loads.

I’ve put a screenshot here to show you what I mean.

Does anyone know what’s causing this to load so slowly and how I can resolve it?

Many thanks

James