Kyrie is not playing good. He was playing on adrenaline and the will to show Lebron and the rest of the league that he can lead a team.
Now that this feeling has worn off, he has reverted back to his old defense... it even looks worse as I think his knee is really bothering him. Offensivey he just can't be the lead playmaker. Teams are doubling him and he is too slow to pass out of them in time to punish it... once he does, the rotation is already there.
A lot of Celtics fans are kinda turning on him.
His Rpm has also gone down significantly... now at 11th for PGs.