Game crash every single time i detonate dead the new Giant worm

I'm playing Smith of Kitava using Fire Spell on Hit socketed Detonate dead and Spell Cascade. Every single time I clear the map Vaal Factory, Crypt that has a new Giant Worm mob (not sure what his name but the monster that very very very very big size) The game is freeze for few seconds then it close by itself without any warning message.