Ok so I have finally managed to take off and land at my chosen destination in the A320 NEO. Problem, on short final I turn the auto pilot off and land on the runway and then the control from my joy stick is all over the place, impossible to control the aircraft after touch down on the runway, I go onto the grass back onto the runway eventually ending up in the trees. Now when I take off the joy stick is fine no problem, straight down the runway and off I go so what happens when I land ? why is it not possible to control the aircraft ?. BTW I have switched speed hold off about three miles from touchdown and my touch down speed is around 140 or slightly less. Anybody that can help ?.