Gallery loading indicator

I love this plugin it works great on my website.

My only issue is that I have a lot of images per page so it takes a little time for the loading dots and the gallery to show (which could make visitors to my site think the the gallery is missing or the images are broken).

I wonder if it would be possible to add any of the following suggestions to help improve the experience.

1. Make the gallery loading dots appear sooner

or

2. Add a more explicit ‘Gallery Loading’ message or 0-100% bar

or

3. Load the images in the gallery progressively rather than waiting for all the images to appear.

Hope this can be achieved ??

Thanks again for a great plugin

https://www.ads-software.com/plugins/flickr-justified-gallery/