Gallery not working on Mac computers and phones

First of all, This gallery is great! but the only issue I am having is that the gallery isn’t working so well on Mac products and software. every time I try to open the page to a gallery, either none show up or part of the gallery images show up. Sometimes they may all show up but a few are faded out. I am also curious about the load times for each image, they take quite a while to open up, is that because of the size of the image or traffic? Thank you for your time

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