Tell us what you are trying to do? We have a map with over 500 pins on it. Each pin marker has an image, title and excerpt. The page is slow to load. What we would like is for the images to only be loaded when a pin marker is clicked. Is this possible?
Is there any documentation that you are following? Didn't find any
Did you try any generic lazy-load solution? I'm not sure if I would expect them to work, they are typically based upon whether an element is in the Viewport, I'm not sure if they are also sensitive to whether the container is displayed or not, and the only way to know would be to try such a plugin and see if it works or not.
I don't have any particular recommendations (Noman listed several in the thread you linked to).