Here I’ve got the Control Rotation printing out to the screen. You can see the Yaw doesn’t behave correctly, in the first shot the yaw is low, then in the next it’s been influenced a good bit but the character has not turned any, then in the last shot on the right you can see where the value of the yaw accumulates enough the character capsule actually falls over onto it’s side instead of swiveling along it’s UpVector.