classmates question

Im answering Matt's question: Why doesn't Claudis get up to leave earlier when they are acting out "him killing the king"?

Im pretty sure that the reason Claudis leaves later than sooner is because he cannot believe what he is seeing. The scene hits him so hard, taht he is in disbelieve. He was probably trying to answer a million questions at once; as well as being taken back that someone knows his secret. Staying in the room, and then leaving for fresh air or whatever doesnt look as suspicious as if he just bolted out of the room right when he realized what the players were acting out. If i had been claudius, i would have just chilled and kept my cool, acting like nothing happened and not let the play phase me.