I probably open ~100 new tabs a day by using cmd + left-click on a link. A couple of weeks ago, I started noticing that the page wouldn't always load (~once a day). The URL bar gets populated, and it isn't waiting for anything to complete, but the web contents also remains entirely white. I haven't been clever enough to open developer tools to see if this is a compositing or loading issue. 

Assigning to myself to get more information.