It seems there is a problem with metallic material rendering on mobiles. With the same roughness and metallic masks from substance painter (sRGB unchecked) I got different results between Shader Model 5 and Mobile rendering:
SM:
Mobile:
So every metallic material became wet. I can fix this a little with brightness of roughness channel but this is a bad solution. I want to get exact same result from substance painter. Maybe there is some settings that I miss?