There isn’t a tutorial for UE4 at the moment. This would be something that Nvidia would need to do for their site. The settings still are the same though. You would still create the destrucitble with PhysX Labs and when you import it into UE4 and open the destructible the settings are in the panel to the right that need to be adjusted. They may look a little different with the new user interface but they work just the same. 