Speed has been addressed, with the high poly meshes being loaded only once and kept in memory until the baker is closed. We can now interact with the Substance Designer UI, check the bake result in the 2D/3D view and keep the window opened.

Baking times should now be much, much shorter.

Finally, a new Skew Correction option has been added to all raytraced bakers. This will allow you to supply a black and white mask to drive the baking and avoid any distortion on hard surface bakes.