Why is the spherical harmonics (SH) order set to 3 instead of 2?

[Golbstein]

I tried reducing it to 2, and while this resulted in a model that was half the size, I didn't notice any visual differences.

[irisfreesiri]

They shared some information about SH bands in another paper: Reducing the Memory Footprint of 3D Gaussian Splatting.

[Golbstein]

cool good to know, thx
https://repo-sam.inria.fr/fungraph/reduced_3dgs/

do you know how their webviewer is so smooth?