Preload images in order to avoid grey background when opening Photoswipe

Hi there,

When I click an image it is being animated/enlarged but till that animation has finished, there is a grey box/background shown (until the image is loaded). When I click the image for a second time (after the image is cached) it is being nicely animated/enlarged without the grey background shown.

Is there any way of preloading the images to avoid this grey box/background?

Example

Thank you!