Very SLow load time

I have a client with a large gallery of videos. I’ve optimized the images to help reduce load time. However it still takes almost 13 seconds to load the page. If I remove the video gallery it only takes 2 seconds to load the page. I’m using the tabbed feature with multiple tabs. Is there any way to only load the first few images in the first tab and let the others continue to load so the page can render faster?

The page I need help with: [log in to see the link]