Hi Stéphane,
Our renderer has many many customizations in it, It might be quite difficult for us to create a reproduction project/ case for you. The draw calls shown above are actually custom meshes, (Not using the standard skybox).
Would you be able to give me any insight into what determines the order of the draw calls?
Maybe just for the opaque pass as a start.
Many thanks
If I am able to reproduce in vanilla with our meshes and subsituted materials I will also let you know.