Fallout NV Normal Maps Glitch

I've run into an issue with effects that rely on the game's normal maps (MXAO, MeshEdges). I can't figure out if it's an issue with textures or the just strange artifacting. This is primarily noticeable on NPC faces and ground textures. I've tried different configurations in terms of load order and game settings (AA, sampling) without any luck. Anyone have ideas?