Animated GIF isn't saving, it's "too big"

This might've been posted already, not sure, but I've figured out for the most part how to get a gif to work in PS Elements 15, but when I try to get it to actually save, it says it's "too big" and that I need to either "scale down the image or delete some layers", and I'm wondering just how small exactly does it want me to make this gif?  I've already tried to scale it down to a quarter of its original size; any smaller than that, and you probably won't be able to really see the gif.

I've never had this problem out of any other programs before, and I'm genuinely about to go back to one of those programs and manually input all 60-something layers of this gif just so it'll work properly...  But I'd really rather not, so any advice on this would be very welcome.

The gif has 65 layers, and is 534 x 720 pixels, if that's helpful to anyone.

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