Safari Pages partially load then stop

I have a MacBook Pro and I am running Yosemite 10.10.4.

I have been having problems for over two months. The first couple of tabs I open in Safari, usually are seamless. Usually. Then suddenly, any additional tabs' pages will start loading the page and then hang with the blue progress line stuck at about 30%. Sometimes if I walk away and come back, the page will have loaded. Sometimes it doesn't. There is no connection to any specific web page that I can determine, although it seems to happen most to links I click (such as search within a webpage) from a page I am already on.

I have searched through everything I can to find an answer.

Your help would be more than appreciated!