Performance delay for extending multiple traces frequently

[Ram-97]

Hello,
I have created the SPC chart and extending the multiple traces frequently (Every 20 ms). Here is my code. As you can see the console in developer mode, the time taken to extend the multiple traces increasing based on the existing x and y arrays that was already plotted.

If we extending single trace, the performance is very good.

[etpinard]

Thanks for posting.

I'll merge your report into #2358