I've been flying my bix3 which has an APM 2.6 installed running Arduplane. I'm having a few problems with some behaviour in flight in certain modes.
In Stabilize, the plane tends to nose down if I let go of the controls. It doesn't really want to stay level, is this a common problem? I'd imagine it holding level.
In FBWA the plane is almost unresponsive, it gives me very little control over the plane and it feels sluggish in general. Stabilize has amazing control and allows me to throw the plane around as I'd expect.
Thanks in advance.