I thought it was just the heightened difficulty but all these zombies make it almost impossible unless you use a grenade launcher or some sort of explosive. If the overwhelming number of zombies is because of the stockpile maximum, i wonder if there is a way to configure the trainer to give smaller amounts (25, 50, 75 etc.) Either way, it really is a great trainer and thank you CH team for providing it as well as every new title that comes out. You ROCK CH!!
The difficulty isn't tied to the stockpile maximum, it's because the cheat bumps the actual game level to one thousand along with the resources. Technically, level one thousand isn't even supposed to exist in the game.
It makes the game completely INSANE!