Left click to move anywhere, then try to move the camera with right click while moving. Smooth as a baby's bottom right?
Now try holding W, then move the camera by holding down the right mouse button. I ended up spinning in circles!
The camera is impossible to control whilst using WASD movement, I think the camera turn speed should be the same as my first example (when you're standing still or using click to move).
Bonus: Add an option that lets you adjust camera turn speed.