The pathing is very bad in various places. Two examples: 1. Ankexfen Keep: In the indoor areas (i.e. where the Chef spawns), pulling mobs around these areas causes them to go through walls and geometry, and sometimes take unknown paths which pick up massive trains from all over, which also come through the walls. 2. Heroes Forge: Phoenixes can't seem to decide how to get to their destination. Really have to baby them along or they keep going back and forth.
