All of my Quixel exported maps with the Unity 5 metalness calibration profile do not render properly in Unity 5. They are always way too metallic for Unity and therefor come out very dark. The same maps look fine in other tools, so I'm thinking the quixel unity 5 metalness profile itself needs to change to be in step with…
Yeah, looking at the latest unity standard shader (metallic) the texture-slot says: Metallic (R) and Smoothness (A). Which isn't what the Unity 5 metallic preset in quixel outputs.