I think a lot of this can and should be blamed on coaching.
We just have no identity. Hence, why some guys go off and then other times they're invisible. if we had a dependable and consistent offensive identity, guys would know what their roles were, what to expect, and what to execute.
We don't. What exactly is Hayward's role? What is Millsap's? Favor's? Does anyone know?
If these guys knew what their roles were, what the go to plays were, and what to do in crunch time, we wouldn't see these inconsistent performances.