Standard shader's specular on iOS has artifacts

I posted something similar earlier, but now I made a test with a scene from scratch.
This is the standard shader on a standard sphere in a standard scene.
The higher the smoothness values, the worse the specular effect looks, you start to see polygons in a strange way. This does not happen on PC/MacOS.
Is this a known problem with the standard shader? Is there a way to avoid it and get a nice highlight? My car shows up ugly because of this.

screenshot on iPad:


Another example comparing specular highlights on iOS with the editor on a car model:

 

Sorry, I'm not expert in mobile field. PBR lighting is part of Unity's pipeline and I don't touch it in my assets. What I do is to build additional features on the top of it (UBER features built on the top of Unity standard shader).

To help you might ask on Alloy thread or Marmoset - esp. Marmoset has shaders that could work better on mobile than Unity standard shader.

Tom

 

@JelmerV I have the same issue
Maybe this is because of "Unity ARKit Plugin" settings?
Did you found solution?

 

I switched

I switched off specular all together and included a sun in my relefection probe

 

Seems Unity has a bug on Specular lighting at least on iOS platform.

 

Yes, this is a known issue.
Can't believe for 2 years long!
https://issuetracker.unity3d.com/is...sing-standard-shader-on-ios-slash-android-es3

 

Hello in 2018
(i mean i still get this bug in 2018)

 

We've found a solution by forcing higher precision floats for mobile:
https://forum.unity.com/threads/sta...g-white-artefacts-on-ios.322624/#post-3396136