Substance Painter vs. Substance 3D Painter

Are they the same, I'm just trying to make sure before I remove the old Substance Painter. I mean on the surface they look the same for the most part, but I want to make sure that I'm not loosing access to a feature or something that may have been removed when Adobe took it over. Also noticed a performance issue with the render view, and that it lags quite a bit. Any help with that would be greatly appreciated.