gridRatio

Size in pixels of each square grid cell used for pathfinding.

Type	number
Default	10
Minimum	2

Smaller values produce more accurate paths but slower pathfinding. Larger values are faster but coarser.

createSmartEdge("step", { gridRatio: 5 });

On large graphs, avoid very small gridRatio values — pathfinding runs on a discrete grid and cost grows quickly.