Any news? :-( Hope they will fix it very soon. It is extremely frustrating. We cannot play since some weeks on our dedicated server because the server always crashes during the mission. We have lost some players because of that reason :-(

Same here. Arma 3 Dedicated Server crashes in version 1.54.133741 after 5 - 30 Minutes. Most time when we using a drone or be in a helicopter.

Our dedicated server crashes when we have started a drone (Darter, Heron, Raven etc.) or when we fly some Minutes in a helicopter.
Version: 1.54.133741

Oh yes, please allow {Middle Mouse Button} + {WASD} or Arrowkeys to change your stances! I can't combine middle mouse button with any other key and this would be very important for me.