I should have been clearer, I was referring only to the last part of the last sentence<p>&gt;Seems loke you&#x27;d be able to overcome the perf issues and finally make that 3D version.<p>Which I interpreted as &quot;once GPU simulation makes things fast, why not make a 3d simulation&quot;<p>Apart from that part I agree with the ancestor comment, the code seems to do CPU simulation and GPU simulation is likely to be faster. On the other hand GPU simulation would likely mean rewriting the entire simulation engine from scratch, so I&#x27;m not holding my breath.