Author here! I experimented a bunch with different ways to calculate the plotted points. WebGL shaders outperformed everything by a mile, though it was weird dropping down into what's essentially a low level C-like language. Check it out <a href="https://github.com/cjlarose/de-jong/blob/master/src/de_jong/components/point_cloud.cljs#L7-23" rel="nofollow">https://github.com/cjlarose/de-jong/blob/master/src/de_jong/...</a>