I'm playing in third person mode the crosshair is right and high of accurate. The crosshair appears in the center of the screen and the camera rotates around the cross hair as though it were still in first person mode. However, the alignment from the characters weapon to the crosshair is offset in such a way as to make shooting with any level of accuracy impossible if you are relying on the crosshair as a measure of that accuracy.
There are two issues here, one is the alignment of the weaponry to the crosshair in third person mode and the other is the position of the camera and the way that it reacts to the motion of your mouse movements. These two things need to be worked on in order to make third person not an absolute slog when fighting in nightmare mode.
