fontaine32 wrote on Aug 13^th, 2010 at 6:44am:

while the auto throttle does move in real aircraft to adjust for wind, pressure, airspeed etc.. It doesn't move that violently.. It adjusts smoothly..  I just don't look at it.  ;)

I've relaised what is causing this for me. When I have auto throttle enabled I have left my thrust lever roughly on half power while taxiing so when I enable auto throttle to take off it's trying to give full take off power but becuawse I have set the throttle to half throttle it's battling as to which way to set it. I have now set my throttle to idle then enable autothrottle and the AP does the rest. This has now solved it for me.

Thanks.