Could you please provide some context about the crashes? What were you doing before the game froze/crashed?
Here's a video of my latest crash (approx. 23:00 BST 5/6/18):
0:00 no enemies nearby
0:14 game freezes
1:37 Network error: you have lost connection to the host
1:53 returned to main menu, losing all progress
Game was joining a random player's chapter 2 mission, had completed a number of objectives and heading to extraction.