Your character has no sleep patterns. If you want more realistic sleep times, take “sleepy” negative trait.
You can play with them, but they’re quite dumb at the moment. They’ll do some idiotic behaviors like charging enemies while at 80 pain, overloading self, using really bad weapons etc.
Playing with dynamic NPCs and high spawn rate (1.0 is high) can get you killed easily. NPCs often have firearms and food, which can alter the difficulty of the game (get you killed or make you not need food).
Static NPCs are mostly safe.
As for bug-testing: currently many of their bug-like behaviors are simply a result of the system, not fixable bugs. If their heads implode, that’s a bug (infinite loop in AI). Things like shooting through allies, picking up useless trash and never dropping it etc. aren’t bugs.