For me it seemed to be related to forward speed. I did multiple rounds of testing, approaching targets at different distances at about 60-70 knots and George consistently missed all shots, the missiles hitting behind the targets. When hovering or flying at 10-20 knots, all shots seemed to hit.
Maybe something is calculated/compensated incorrectly when moving, or the delay between lasing for target data and firing the missile causes some kind of drift in the target location information or something. Just wild guesses, I have no idea how they actually (are supposed to) work.