I tried adding deep zoom to mine, https://www.zazow.com https://www.zazow.com but it became way too slow. Arbitrary precision math is just orders of magnitude s

I tried adding deep zoom to mine, https://www.zazow.com https://www.zazow.com but it became way too slow. Arbitrary precision math is just orders of magnitude slower, at least in the way that I understand it. I am not a mathematician.