[Bug] Paladin Truthguard Quest

After taking my flight from Dalaran to the scenario and final part of the Truthguard quest, all character sprites (NPC, Enemies, myself) 'Flicker' once entering the temple.

By flicker I mean they appear and disappear fairly rapidly. Adjusting camera angle does not change the effect of it happening.

The Health Bars/Cast bars remain, as do the Wind/Tornado animations when going through the temple and some of the frost animations from the caster add.

http://i.imgur.com/4BFNF6J.jpg All my video settings in one place.

I was able to complete the quest after 3 attempts (with some noted difficulty of not being able to see the mobs haha)