Spawning messed up

Hello everyone, here’s my problem. I have Static Spawn set as False, so enemies spawn during the game instead of the beginning, and also, I got Classic Zombies as False, so all types of mobs appear.

However, I’m on the 7th in-game day already and all I see it’s child zombies, with the occasional normal zombie. That, and normal animals like squirrels, coyotes and spiders. I can stroll across the street during the day, make as much noise as I can, and still no enemies, other than the already mentioned.

Did I fucked up something?