Time and proper direction.
Blade Runner 2049 managed to outdo it (it's the best cgi off the top of my head) by utilising the same philosophy.
Plan your vfx far in advance and specifically (none of this figure it out in post shit), and then have your artists start working on it before filming has even taken place. Additionally, focus on "realistic" effects. Ie, a squid face has an easy reference because you can easily photo an actual squid to see what it should look like. A huge skybeam with a guy in latex suit backflipping off of floating rocks doesn't have that same luxury and, worse, would look really stupid if done in real life so it's hard to recreate that and trying to make it look less dumb.