Tessellation does not seems to be working by enabling tessellated in mesh configuration, Is there something else I needed to have done?
Do you use displacement materials?
Yes, I just found how to switch materials from a Pavel Oliva tutorial, but still thank you.
And also now, toggling tessellated works on all meshes except for the cube. Tessellating the cube freezes the editor and I have to force close the application after an hour.