These server crashes are absolute garbage

Trying to run the map Mire. No lag outside the map. Unplayable lag inside it. Should have had 3 attempts. Lag caused me to die. Kicked out of the game after death. Logged back in with 3 portals left and it says I cant reenter the map after dying. Still says map in progress on end game map. Utter BS. Not playable trash. I used my best waystone on this map I had and now I cant even kill the boss or do the bonuses or complete the map. I could not be more pissed off. Why put out an update that isnt stable enough to play and enjoy?