Effect of caton

[yuanyuan-xy]

I want to render something like https://ihcantabria.github.io/Leaflet.CanvasLayer.Field/example_ VectorFieldAnim.html But I found that the particles scattered when dragging, and they didn't stop like in the example, and they were stuck. The code is the same as that in the doc. What can I do to solve this problem

Thank you for any answers
YangXy