today I flew a little with my Arrow and experienced something strange:
at cruising speed with the AP turned to HDG and ALT the aircraft started vibrating noticeably which turned pretty annoying after a while. First I though it might have been the new update to 0.3.0 because it was the first time I flew with that, and never had those vibrations before. I also changed to the Mooney mid-flight and there it was gone with the same settings. Then I started a new flight with the Arrow again and as soon as I turned on ALT it started again. No problems without ALT hold.
I am aware that the altitude hold function is only there for out convenience, since the real AP of the old Arrows didn’t have it, but still it’s a little annoying. Anyone also have that problem?