What do you mean, camera turning speed? I don't understand, our characters can turn really fast while still having a graceful motion. I use a controller turning is fast, it's the camera that can't keep up.

A good thing would be adding an instant camera pop behind your character. When I do a 180° turn, I press the button and the camera automatically gets behind my character. It would allow for faster reaction when monsters run everywhere!
(On the controller, I would map it to the current button for switching view and keep view switch on the keyboard instead)