I dont take Ar234 formations...Ive seen too many folks loose em on takeoff and wasnt sure if that had been fixed or not....(not worth loosing that many perks!)
I havent had the issues on landing.
The only issue Ive had with drones is taking off and getting them to join up. Sometimes a hillside will be close and no matter what I do, sometimes they never join up. I dont know if they are on a timer, certain speed, climb rate, flap setting, etc