3D artist explains why Arcane looks so good

It is still a 3D animation, but the props are not 3D models. Instead, they are painted and projected to the primitive background. Yes, the floor and walls are in 3D space, but they mostly serve as shadow catchers.
Fortiche Prod did such a great job. Shout out to all the background artists!
Looking forward to the Arcane Behind the Scene or the Making of.