We have played countless amounts of hours of Official DayZ and we keep discovering an issue where we drive through a town going over 60 kms and we have people disconnect not just team mates but the other people in the town, what we suspect is happening is the player bubbles collide and force someone to disconnect and the "unstable connection" screen pops up. It has also happened to us where myself and my team mate both disconnected and our first thought was "oh there will be a car driving past us in a moment" and sure enough there was a car with 2 very geared people in it that flew past us. It makes it so difficult to find people because we feel like every town we drive though may have someone but we just made them disconnect. We aren't sure if its because its more than one player bubbles colliding or if its caused by the car itself.