I really like the concept of this. The AI was hit or miss for me, though---sometimes it would behave realistically, and sometimes it would refuse to move anywhere and just sit around getting bored. What you've made is quite impressive overall!
The AI has a limited range! If there's nothing nearby for it to pathfind to it'll just stand around.
Probably should've tried to make that more obvious to the player.
That makes sense, thanks for letting me know!