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Plotly mesh3d animate slow at 1M points

plotly mesh3d animate is quite slow at 320K points (and very very slow at 1M points)

I was hoping if I set “opacity=1”, that means only the surface points are drawn (since the inside points become invisible) so I thought that would speed up performance. But that seems to have no impact at all?

I also tried with transition duration to 0 and easing to ‘linear’

Has anyone been able to make any headway with meshes of 1M+ points? Or should I try webGL with three.js?