4k spheres with 92 vertexes are nice, but too heavy for Oculus Go.
Tested on Oculus Go (with touchpad).
For tests on a desktop (Windows 10 + Chrome) the "inline" webxr session and
A,S,D,W,↑,↓ keys for navigation are used.
MiniMol WebXR viewerupdated 26 May 2020