You have not supplied enough information for anyone to formulate an intelligible response.

 

"takes a lot of input" Keyboard, mouse, yoke/joystick? Look

, we need to know WHAT IMPUT, what did you do before you tried to take off? As 1 commenter already said, you might not have set up the NGX correctly and now that is throwing everything off

I find it kind of funny this topic being under "NGX (and FSX) has never been better"

Reminds me of a mate who took my PMDG plane for a spin. Yoke, Rudder pedals, throttles, and he says "what button do I press to make it take off?" I just casually pushed the thrust levers to TOGA and told him to deal with it. Resulted in a tail strike, nose dive, over-run and STOL all in one take-off. A new era in IFE I think.