I'm not sure if I'm doing something wrong, but every time I engage the autopilot it veers off-course and ends up missing the waypoint. It doesn't happen as much as when I'm within a few km of the waypoint because it doesn't have enough time to move off-course. It's weird because the plane correctly orients itself in VTOL mode before switching to plane mode and then veering off-course. The plane is also tilted weirdly when in autopilot but that might just be a Stormworks thing. (I don't have any of the DLC so that might be it.)