score:1
Accepted answer
You don't need to redraw the chart after every add point operation. It is much better to do it after the whole set:
for (let i = 0; i < 300; i++) {
chart.series[0].addPoint(data, false);
}
chart.redraw();
Live demo: http://jsfiddle.net/BlackLabel/n0x9sjz7/
API Reference: https://api.highcharts.com/class-reference/Highcharts.Series#addPoint
Source: stackoverflow.com
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