Unity 2018.3 New prefab system How do I get rid of it?

Hello guys please help me. I'm update my project to 2018.3, and new prefab system, it's slowing me down, making me slow worker. It is so complicated. Is there a way to shut it down or get out? 1-2 is able to process in advance. Now I have to do at least 5-6 transactions, which makes me very slow and very complicated. I just need to delete something from the object or remove the new system with very complicated ways to put me and each time.