Remember how you felt as a little child with no dp, everything was so exiting and how amazing it was to feel so alive.
Its cuz you didn't questioning anything, the universe,life and death was just cool things that you accepted and didn't think about.
imagine if you already as a kid started to think how weird everything is( all the extensial thoughts that i don't want to write)
and if you started to question everthing. I'm pretty sure the world would have began to look pretty strange.
My point is the Universe is a fucking weird place but most people don't think about it, they just accept it.
its when you start to question everything that everything feel different.
like when you say a word to many times its start to sound really weird, its just the same thing.
its possible that many of us already are 100% recovered but the world still looks strange cuz they can't stop question it.
just try to accept it and live your life and your dp will go away someday, its just takes time for your brain to get use to this new point of view.