Guild Wars 2

By FAR the worst NPC I have come across is the female norn by the leatherworking station in Hoelbrook. She says quote.. “Take heed, I haven’t taken leave of my senses. I’ve seen creatures of metal and steel.” By FAR the worst. She will say it and sometimes cut herself off, and repeat it again, and again, and again. Like 5 or 6 times in a minute.. Terrible

So i decided to update my GTX 560 TI graphics card today because its been a while. Thinking this would help with performance. It updated to version 306.23 WHQL. Now when i play, at certain camera angles i will look through objects, it could be through a mountain and i can see the trees and bushes on top, or through my characters body where i can see his helmet through his back. Anybody have any tips on how to fix this? Can i fix this on guild wars side of things, or should i revert to my old settings. Not sure how to switch back.. Any help would be appreciated.