why Plotly.react() is as slow as Plotly.newPlot()? updating single trace of many

Hi, I am trying to redraw only single trace in a plot of many traces (biophysical data). I tried to follow instructions in react-plotly and plotlyjs documentation:
https://plotly.com/javascript/plotlyjs-function-reference/#plotlyreact
Plot is updated but I don't see any performance improvement if I change only single element of data or all data elements:
Here is MWE in codepen
Briefly, I generated sample data 100 traces of 10000 points and changing only first trace with:

  data[0].x =  [...Array(10).keys()].map( c=> c/10) //change only first trace
  data[0].y =  [...Array(10).keys()].map( c=> Math.random())
  Plotly.react('myDiv', data, layout);

Drawing plot containing single trace takes just a split of second, but if I had already drawn many traces and I want to redraw only single trace, it takes same time as to redraw all traces (few seconds).
Am I doing something wrong?

从链接的 CodePen MWE 开始，使用所述的 100 条 trace、10,000 个点的数据比较 Plotly.react() 和 Plotly.newPlot()。阅读链接的 Plotly.react 文档，并跟踪仓库中的更新路径；issue 未指明源文件或测试。完成这项工作需要找出产生相近计时结果的原因，并定义预期的优化或文档变更。