Maybe it's not going to matter when it's in 3D and the ride vehicle is in motion, but what I've seen of the in-ride CGI has been kind of pathetic.
Low-poly models, flat backgrounds (again, maybe with 3D it won't matter) and some of the worst light mapping I've seen since The Scorpion King.
For the record, I haven't ridden the Hollywood version.
I'm not sure what all you've seen, but it was definitely from Kong 360 in Hollywood, which they've been using to promote this ride. None of Skull Island's 3D animation has been leaked as far as I'm aware.