Any more info at all? I'm not surprised that enemies behave weirdly with larger scales but I am offsetting their position so they don't get stuck in the floor. I can't see any obvious issues from spawning in some random npcs

Behaviour wise they just spawn and "spin" in one place until they are killed. They don't react to player at all and they pretty much do that independently from terrain. It's hard to say if there is any pattern to that