RETS IDX

I have a RETS feed which allows listings to be downloaded from my Multiple Listing Service. This is accomplished through WP Residence and WP All Import.

I had the images on a CDN originally but this got too expensive so now they are downloading to my site and right now I have millions of images, all unoptimized.

All Import suggested this plugin but were not sure it would hotlink to the gallery images as well as the featured image. The link above is an example.

Any help gratefully received.

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