NGX weather Autopilot fix

Is there an alternative fix to the NGX autopilot v weather autopilot problem other than purchasing the expensive FSUIPC addon?

 

I have paid for both the NGX/FS2CREW and REX essential and don't think it is fair or reasonable to spend more on a problem that should not be occurring with the NGX.

 

 

Yesterday's short 1 hour flight was unbearable from takeoff to landing with uncommanded yaw from the ailerons here and there all the way from climb to descent and landing, eventually I had to switch off FSX before my flight made sim news.

Just to Know do u have accu-sim installed? If so when u usethe pmdg737X disbale it for this plane! i was used to fly with this addon on and the plane moved up and down till i disabled it..