Game (Server?) Crash on Sun Temple Map (nodes right before Stone Citadel) and losing everything

I was running through the Sun Temple Map node, which is located right before i reach the Stone Citadel, and when my run was close to completion my game froze and quickly kicked me out to the login screen.

When I logged back in, I had lost all the items I gathered, the waystone I'd used on the map, got an experience penalty (as if I had died), and the map had automatically failed, so I lost all of the precursor tablet buffs and other node buffs.

I decided to try again with a new waystone. The same thing happened again as I was about to defeat the final Rare monster on the map, but this time I had gotten a Divine Orb only 30 seconds prior. Again, when I logged back in, I had lost everything I gathered (Div included) as well as the waystone I used.

I tried a different, adjacent Sun Temple node, to see if it would happen again. Sure enough, my game kicked me out to the login screen for the 3rd time while trying to run the map. And again, all progress lost and I lost experience again as if I had died.

I'm not sure if I should keep trying. It seems to always happen when my Herald of Ice/Thunder triggers on several enemies at once. But this is the first time it has happened to me, and only seems to happen on this specific map. Very disappointed that I feel like I cannot get to the Stone Citadel because of this.

UPDATE:

I tried running it for a 4th time and Indeed it crashed again, and can confirm it wasn't the Herald of Ice/Thunder. This time it crashed with no enemies around. I think its the same part of the map, on the bottom right corner of the first floor of the (triangle shaped) map. That is where it crashed each time.