Shocked Ground w/ Minions Causing Crashes

Clearing the Forge map with the shocked ground addition consistently caused crashes. I was able to reproduce this in the map instance 7 times. In testing, I would crash after approximately 1-2 minutes.
This occurred on an infernalist minion build initial consisting of 14 minions and the player character. Crashes continued to occur after lowing my total minion count to 1 hellhound, 1 lighting mage, 1 cleric, and 2 arsonists, at which point I ran out of portals to continue testing.
Testing in other areas of the game include campaign maps and a Mire map with freezing ground did not result in a crash or otherwise negative performance.