Mixing CG animation and 2D animation is one of the toughest needles to thread in the business.
You essentially have to have a CG team and a normal animation team that are completely on the same page all of the time, as well as the money and resources to work out all the kinks.
It's no wonder that so many anime just choose to fully commit to one or the other, because trying to make both work in tandem is a task that few have ever succeeded in. While definitely not impossible, it's a lot harder for most studios than others.
This list is proof of that, as these are some of the biggest blunders in trying to use CGI in anime.
They take all of the progress made by anime such as Land of the Lustrous, Dorohedoro, and even RWBY and throw it all out the window into a bottomless pit, making all observers wonder why we even bother trying to put CG in anime at all.
10. Dragon Ball: Resurrection F
Back in the early 2010s, DragonBall fans were given the first bit of goodwill in literal decades in the form of two back to back movies that officially carry on the canon.
However, these movies would be made by Toei, and though Toriyama would be on board at every point to make sure these movies were faithful to the source material, one can only control a heartless corporate entity like Toei so much.
While nowhere near as bad in Battle Of Gods, where it's offset by the rest of the movie being legitimately great, the mediocre sequel Resurrection F's egregious and obvious use of CGI in fight scenes is far more noticeable.
Mostly because they do it way more than they did in Battle Of Gods, where it was present in - at most - 2 minutes of one fight scene.
In Resurrection F, however, the CG is far more noticeable, used a lot more, and it looks SO BAD. That really is the rub here, because the next film - Broly - uses CG a lot more, but it looks a million times better than it does here.