This has been only for me in my gropu.
I got also 3 dc’s, at least we can log back in.
But no fight was playable for me.
making one move, and get’s stuck for up to 5 minutes.
also, missed on 2 chests because of that.
EDIT:
This has been going on also in the open world, but not as bad as in dungeons.
(edited by omerk.2709)