>>294447521
Also, pro tip from 3DCG

Download and install SciPy for blender 2.8x and use "mesh fairing" instead of mesh smoothing. Fairing with SciPy is a billion times better than smoothing and never crashes.

https://www.youtube.com/watch?v=hrCILKVbjcI

https://github.com/fedackb/mesh-fairing