Is There A Gallery Item Limit?

I have a size 1500 gallery and it’s completely plain, no coding, but whenever I click it now I get a blank white page and nothing loads using an iPhone. I still have thousands of items left to buy until it’s complete too. I don’t have a desktop/laptop unfortunately.

I’m wondering if my gallery is too big for mobile or if I’ve reached the limit of what’s possible on a very old code website? Anyone else have issues page loading their gallery above a certain size? I’d like to sort the uncategorized items at least if I can’t get it to load properly anymore, but I don’t know if that’s possible. Thanks if anyone can help!