I tried asking in twitter before but no one replied so I’m asking here this time.
https://drive.google.com/file/d/1I6ua5TjWJUzseywPilPj_AiHk5qlyjS-/view
The gif goes from Metalic (1) No roughness (0) to full roughness (1) (and then the same for non metalic(0))
The rough(1) surface shading seems totally wrong to me. My guess is that this is an issue with filtering the HDRI but I’m unsure, should this be bug report?
(I also tested with point light setup of 3 pointlights in triangle around the object and the shading was what I would have expected/clean)