Any long flight I do over 10 hours the aircraft leaves the programmed route and heads off into the sunset. Somethings wrong , do not struggle with other developers aircraft. I do not have any discontinuities programmed. Latest flight from EGLL to SCEL left the route after 12 hours and turned right and headed off on its own. This is the 5th time I have tried a long route to no avail. Routes programmed from Simbrief.

Hello,

AP usually disconnects if: 1) AP DISCON PROTECTION in the OIS is off 2) Severe weather changes

What is your turbulence setting for the simulator? 

Ap disconnection is on, I'm using Rex weather and realistic weather in the sim?

Hi again,

We use CFD (Custom Flight Dynamics) - anything above MEDIUM/LOW in the turbulence settings can easily mess with our FD logic. It is heavily recommended to set your turbulence to LOW when using the 350. This will minimise and almost entirely get rid of this issue until we can figure out a better way to counteract this. 

Thank you and apologies for the inconvenience!

Ok Great , I will set it to low.

 

Thank you.