What works 100% correctly in this sim

Sounds like a good idea, maybe you can make a topic about it in the suggestions forum. The no crashes is that it prevents a “mission over” at this time.

Some objects have no collision and no idea if there is a settings in a .cfg for buildings to edit.

What in regards to the AP are you trying to use that doesn’t work?

VNAV on the Airbus I haven’t figured out how to use. Same for the ap in the da62. I believe those aren’t working in general.

Then there’s general navigate to waypoint issues but I’m not sure you count that as ap issues or the flight control system.

Fair enough, I just wouldn’t consider that as being AP doesn’t work. I’d argue to say VNAV doesn’t work, but I can’t speak at all for the airbus as I don’t fly it.

Also fair to say some parts of ap are working better than others. For a flight simulator, bugs like that should not be there. I will accept more rare bugs will happen but for a whole feature to not work (there’s a button most planes for it), it’s kind of silly