Anyone else having this issue?

When fighting Bonehew the Thunderer, when he uses his AE knockback, the game locks up forcing a reboot. My system is unresponsive to all but a power cycle. Never had lock ups in the game until this. At first I thought it was a fluke so I just ran another one to be sure. Sure enough, AE, grey screen, lockup, reboot, and here I am.

Newest drivers and all that, just curious if anyone else has seen this or not.