These pages outline the chart configuration options, and the methods and properties of Highcharts objects.
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Set the point threshold for when a series should enter boost mode.
Setting it to e.g. 2000 will cause the series to enter boost mode when there are 2000 or more points in the series.
To disable boosting on the series, set the boostThreshold to 0. Setting it
to 1 will force boosting.
Note that the cropThreshold also affects
this setting. When zooming in on a series that has fewer points than the
cropThreshold, all points are rendered although outside the visible plot
area, and the boostThreshold won't take effect.