At 3 int(base for trolls), one gets 16% pracs per prac.
At 10 int(base for humans), one gets 17% pracs per prac.
At 14 int(might be 13 or 15, can't remember), one gets 18% per prac.
Yet, after testing practicing up to 92% with 10 int, it takes the exact same amount of practices for a 3 int person to get 91%.
I don't know if it's a bug, but the next practice for the 10 int leads to 93%. While the next prac for the 3 int leads to 94%.
That actually saves the 3 int person a practice
I don't want to hop on ds and back to ls to make sure this is 100%, but if you could please look into this IMMs, it's pretty much there.
Gotta love intelligence.