There is already a post on the subject here 
Video driver crash in World of Warcraft with AMD video cards (7900 XTX) on DirectX 12 - #182 by Kotzjr-lone-wolf
There is already a post on the subject here Video driver crash in World of Warcraft with AMD video cards (7900 XTX) on DirectX 12 - #182 by Kotzjr-lone-wolf