I have been trying out the King Air on my mobile app. I noticed it floated down the runway and would not stall to land.
So, to test it and find the stall speed, I took it to altitude, pulled the throttle to idle, dropped the gear and pitched to 10 degrees. I did not use flaps at all since I thought 43 degrees of flaps was causing me to float down the runway. After about 3 minutes, the airplane settled in at 79/80 knots and had a climb rate between 80 - 130 fpm.
Overall this is not a question but perhaps more of a bug, unless the real King Air really is the only airplane on the planet that can maintain 80 knots and a 100 fpm climb rate without power and with gear down :-)