Insane to bit insane

Macbeth was more insane when he first killed Duncan and now that he is finally king he is more calm then ever because he so proud of it sadly but then he gets a bit insane when he starts seeing the ghost of baquo because he sended a murderer to kill him and his friend fleance . Macbeth starts to talk to himself a little bit but he is really talking to banquo to leave. Lady macbeths mentality changes a little at first she was a little in control and then she acts like nothing happens and like everything is normal. But its not.