I didn’t see any prequel level bad CGI, unless the 3D is masking it? Nothing could be as bad as Anakin riding those cow things with giant asses in AOTC. I’ll see how TLJ looks in 70mm next month hopefully.
And I don’t think all of Rey’s past has been revealed to us yet. Her parents being nobodies buried on Jakku does not square with the childhood trauma/memory of crying as a ship leaves the planet as we saw in TFA.