Once you hit e^5 metamatter, it jitters really badly and gives me a headache and leaves me more or less unable to read the amount. Otherwise, fairly fun for a short experience!
EDIT: It goes away for a bit, then comes back at e^7, it's something about the /s indicator that causes it to dramatically change length, the fix is to enforce a given width, or to left-align, or whatever, I'm sure you don't need me to give fix suggestions :P