Is there a way to increase the cache on the photo screensaver on Apple TV?

I thought this issue would be resolved when I just upgraded to a new apple TV (Apple TV HD 2nd Generation 32GB), but the screensaver is still limiting the variety of pictures it displays to ~500 pictures. And it's always the same (newest) 500 pictures.

This is really frustrating because I'd like to be able to use my apple tv like a digital photo frame and be able to see all my pictures that go back years.

Based on my research, this seems to be a caching limit, but is there a way to override this? I don't think i use the storage on my apple tv for much else, so I have no idea why this hard limit would be in place like it is.