title: terrain lighting issue Unity
body: <p>I'm getting some weird effect on my terrain on iOS devices. In editor, it looks fine; on device it shows the light like the image below. The textures on the terrain are using the built in standard. I have verified that the metallic property is set to 0. I have Tried changing the material, the probes, all are not fixing the issue. Looking to see if anyone has experienced a similar issue or have a lead; I can work on a test. Using unity 5.3.5p5</p>
  
  <p><a href="https://i.stack.imgur.com/imDLA.png" rel="noreferrer"><img src="https://i.stack.imgur.com/imDLA.png" alt="enter image description here"></a></p>