NPP over 100?

Does it mean you have a bug if I have NPP over 100 against some bots? [1] Or are the ranges only recalculated at some interval, so maybe I scored higher than the previous max score against that bot?

Because the different halves of each pairing is stored separately, each might have a slightly different idea of what its score against each other because one of the scores being dropped from cache. I've considered fixing this in my batch processing by taking averages, but never got around to it.