lazy load delay on mobile devices

Hi,

For starters this is in my opinion the best and fastest lazy load of all of them.
I do however have a question concerning the lazy loading of images on mobile devices.
For some reason there is a “significant” time delay between the scroll and when the images appear.
This leads to when the user scrolls down, him seeing many product titles without images and only about 1/2 second later the product images appear. Is there a way to reduce this delay so that images appear immediately?
thanks