Not that I don't think that is a problem, but the thought of that being the "Most disturbing thing in Dragon Age Inquisition" could be an over statement.
But to your point, try messing with the settings, there might be something that changes it. Does the game have any type of post processing filters like chromatic aberration that might be the cause?
As i wrote, setting "mesh" to "high" would change that. But i would lose too much performance if i did that.
In addition, i can't reduce other settings to improve my performance because all setting set to "medium" or "high" just cost me about 2-3 fps, and playing with a lower resolution than 1600x900 is as bad as plastic hair.
I' just wondering why the glossiness is a tradeoff for less detailed meshes. At least with Engines i worked, shaders/materials and meshes were completly different things. 
Shouldn't it be easy to remove the glossiness on lower settings? I mean, the game probably isn't performing better with glossiness than without and it looks weired.