I’m pretty sure the giant pig creature was CGI, the early leaked photos of it was the stand in used on location. That hardly looked like it was capable of moving the way it did in the film.
Having seen the movie twice in 70mm Imax, the CGI creatures held up pretty well. (I saw details in Maz’s face I did not see in digital projection.) Better than anything I saw in the prequels. Snoke might be the exception, but we really only see him as a hologram.