Streamlined Battling? (2x rewards, 1/2 encounters)

As for Magic Points, doubling them could cause an overflow error with high learn rates like Bismark's x20, and I don't care enough to write code to cap it (it doesn't fit inline anyway).

Can you elaborate on this more? I'm planning to use this in my "Definitive Edition" hack, and will manually re-balance the Espers to account for fewer battles (probably make the learn rate for magic 50% higher, but playtesting will be necessary to see if that captures the right feel). What causes the overflow error? When the amount of AP exceeds 255 or something like that?