Hi,
We’ve just noticed a bug with rendering rough materials on the iPhone XR/XS where objects shaded with a material with 0 glossiness and metalness disabled still reflected the cubemap. This is making our hero models look rather unappealing on these devices.
I’ve attached a screenshot of a basic test scene where you can see a comparison between the rendered image on a PC and an iPhone XS.
We’ve tested on a lot of various devices and have been pleased with the vast majority it just seems to be these two phones that we’ve noticed this on.
There are still problems with this solution, such as when there is a skybox in the scene, and the system will make a serious error when there is a texture in the diffuse