Swatch won’t change unless you click multiple times

Hey guys,
For some reason when I first load a page and click on a swatch, it won’t change the image linked to the color. I have 2 click the color swatch 2 or 3 times for it to work. It’s very random. I’ve disable caching plugin to troubleshoot but still happens. Any idea what’s going on?

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