Crash to desktop in North Shattered Hills

Crashed to desktop several times, while I was fighting zombies or just being near them, in North Shattered Hills. Experienced 2 CTD's, specifically after I died due to zombie plague. No crashes while I was fighting humans, just zombies. Could this be related to zombies and the plague?

 

Just wanted to report I had 0 crashes in Desolate Hills (another location where I had frequent crashes and made it unplayable for me). Spent a good 2 hours in there farming xp (maybe a little bit more) and loot but experienced 0 crashes today! Haven't tried other locations I had crashes in though. Another thing, wasn't on fullscreen while in there like previous times, just mentioning.

 

CTD while zoning out of Desolate Hills, while a mob was present in the instance that was immune to any type of dmg (tried several schools of dmg and he was immune but was attacking normally nonetheless, he was just not moving and was of melee type).