I'm having the same problem

I have the same problem.

Me too. Had about 10 DCs today. About half of them on the 3rd level of expeditions and all progress was lost :(
(Of course I checked other sources of issues. My internet connection is stable and also ingame the ping to the server (Frankfurt) has solid 12 to 14 ms delay.)

Uninstalled the game and reinstalled it. Seemd to be working fine. Got thru a couple of expeditions today with no problems. Got to a boss, the one that rotates shooting a lazer and the games froze and DCd to the main menu. Went back to trying just to run missions, ran a couple just fine. Ran into that same type of boss, same thing happened in a mission, which has never happened to me before. The game froze for about 20 seconds with that boss shooting his laser beam, then finally I was DCd to main menu.