I also can no longer enter the new dungeon (Grand Cosmos) without immediately crashing to desktop with no errors whatsoever. At this point, after two full reinstalls of the game, and a gfx update to the latest possible AMD drivers for my card, I cannot do the new content. Even though I cleared the new dungeon once with no issues earlier on in the day, I can now no longer enter it, and consistently receive dx11 errors at the same phase on the final boss of the raid.

It would be REALLY NICE if there was some acknowledgement of this issue, as I know many others are experiencing similar problems, and some kind of update on it getting fixed.