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Display big data in ChartPlotter

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Hi,
I want draw large amounts of points (over 10k) in ChartPlotter,and the application runs slower and slower.
I think it might relate to the method of update.
Does the ChartPlotter update by redrawing all points?
If that so,how can I update points by other method?
If not,plz figure out the problem.
Many thanks.

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