Large datasets

I'm wondering if DIVA has some sort of maximum for the amount of data points it allows during the Bioclim modeling process? I'm working with hummingbird locality data, which can contain a couple thousand unique location points per species. I've previously run some models using plant data (only a few hundred locality points per species) and the contiguous US climate layers at a 30 second resolution...it worked fine, however it took a pretty long time to run (the program never froze up). I tried running some hummingbird data and almost instantly after the .gri file was made the program froze. So, seeing as though it's probably not a climate layer resolution issue, I'm wondering if there's a max amount of data points Bioclim can handle.

Thanks so much!
Rachel