HTML view does not load first time?

All,

I have two HTML views on my Visual Composer model which both have 'Start' connectors going into them with the URL's defined (and correct), but when the page first loads the HTML views just show as gray boxes.

To get the HTML views to display the user needs to refresh the page then they appear!?

Has anyone also experienced this? If so how did you resolve this problem, because this is unacceptable to the user?

Thanks

Conrad