First I want to thank Ultrapotato for posting the information on this thread and others to get me here to this one :). After days and days of updating drivers, formatting and reading forums i found this thread.
Here is what you do:
1 - Start WoW as you always do
2 - Go into the game menu
3 - Click on "System"
4 - Click on "Advanced" (on the left had side of the menu)
5 - Click on "Graphics API" heading
6 - Then Change Directx11 to --> Directx9
7 - You will then have to restart WoW to make the changes take place.
I have only had this error since patch 5.04, so I can only assume that it is some sort of bug that will be fixed in the future. Until then i'm happy to play using Directx9 and HAVE no more problems.
I have been playing for about 5 hours now without an issue. Now remember as mentioned above, "The downside is that you will not be able to use the DX11 API in WoW until the issue is solved by Nvidia and WoW Dev" But this seems to only be an issue with WoW.
Hope the simple direction helps