EDIT: THIS IS MALWARE!
After what's written below (I tried both browsers) I decided that the downloadable must run better, right? So I download and run it and no more than a minute later my computer is completely frozen and black screens. I have to physically reboot. For whatever masochistic reason I ran it again, but this time with Window's Resource Monitor running and after about 30 seconds the last thing I saw before everything froze and black screened again was Resource Monitor reporting that 99% of Physical Memory was in use. This is malware. Unintentional malware, I'm sure, but malware nonetheless. If it just crashed then whatever, it would be fine. But it doesn't. It takes the whole computer down with it. Do not download this!
RuntimeError: index out of bounds
Happens in Firefox and Chrome. Latest versions of each as of the date of this post. Happens after about 5 minutes without fail no matter what I do or don't do.