[iNic]

I got 0.4 sec with this: function controlFunction(block) { const maxforce = 100.; if (block.x < -1.01) return maxforce; else if (block.x < -0.01) return -maxforce; else return -block.x - 2 * block.dx; }

[iNic]

Interestingly enough this does not work in every browser. (It worked in Orion, but not in Brave.)