In SS2008 when you turned the helm, the rudder moved instantly, at the same time you moved the wheel. The rudder degree indicators in SS2008 aren't actually accurate as far as I know, just "eye candy". It is realistic that the rudders take time to turn after you have moved the wheel. Same with the bow thrusters, For example on the real Pride the bow thruster reaches full thrust 5 seconds after the control is moved.