-there seems to be spots in different areas where you can get "out of bounds"
-when entering rooms with a lot of NPCs I get a window that pops up out of the game telling me "There are no NPV spots on the template. Please try to download the latest version of the game." which I presume is show because there are too many NPCs
-also in rooms with a lot of NPCs many are stuck in walls
-again, in rooms with a lot of NPCs many are close together, so when you push 'E' to talk to them, every NPC's text window pops up that you're close to.
-in rooms with a lot of files (i.e. I had one room with 89 enemies) many enemies of the same type spawn on top of each other
-also in rooms with a lot of files, some enemies will spawn out of bounds
-when an NPC is standing on a platform directly above you, they begin to turn left and right incredibly fast
I'll update this as I come across more. Hope this helps