I would say that maybe directors who act as well are easier with actors. I'm not saying that all directors have this, but sometimes you'll come across a director who sort of looks at an actor a bit like a kind of untrained horse that's been let out of the stable, like they might buck him.
“Actors make bad lovers. Their most important kiss is for the camera. Not in a superficial way, in a really deep way. They can only give everything if they know someone is going to shout cut!”