Specifically in Dun Modr, Wetlands, certain buildings make every character flicker with any turn of the camera or movement of the model. If I let go and stand still, I’ll either stop flickering or turn invisible. It’s not just me: every player, NPC, pet, everything except the environment or set pieces.
I know a lot of people will say to update your graphics card, so let me just say: I updated today, can’t verify whether that’s the problem because I’ve not been in these buildings in years before today. If you’re wondering what I’m talking about, search “flickering” and look for the Timbermaw Hold posts from 8.1.5, it’s the same problem here.