There are no site/server caching systems in place. Unless something has changed dramatically without my knowledge which is highly unlikely.
I really do not think it is a server issue, which was my first thought. However when I recently moved the site to a new server to go live (with hope of problem being fixed on it’s own.) nothing changed. I am still experiencing the issues.
Welcome to the Advanced Custom Fields community forum.
Browse through ideas, snippets of code, questions and answers between fellow ACF users