Lazy Load Integrated Video Tutorials

I think have have too many videos on this page. is there another way to implement them all on one page reliably without creating more pages to limit video and page load times? Sometimes the videos load and sometimes they do not. Just reload the page and perhaps you'll see what I mean.

The top videos seem to load right away. Others towards the bottom never seem to be able to play. Is it just me? Pause one, then try to play another.
(password is currently "support" and not sensitive. )