If you have troubles since the update to WordPress 4.5 please read this post before opening a new thread.
Personally i have not tried but you can try a plugin such as this one https://wordpress.org/plugins/photopress-masonry-gallery/
If that does not work, You are going to need to hire a freelance developer on Envato Studio or Codeable for that kind of customization as it is beyond the scope of support we can provide. You can also request quote here.
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