I think it's just rank.
It's the other way around. You got stronger and you're dealing more damage per encounter, so you're accruing PP faster. Soul rate is the same. You just haven't done as many raids as you did with Yggdrassil. It's only day 3 after all.This is kinda frustrating.... Did they reduce the souls drop quantity? During Yggdrasil, I have around 1.5m PP and I have 150 of both souls.... This time, I literally have half of that (60+ Holy and 30+ demon) with 750k PP...