That's 7 seconds waiting for JSFiddle, not Highcharts. In my Chrome browser, Highcharts renders 800 bubbles in under 200 ms: http://jsfiddle.net/highcharts/hAyz

That's 7 seconds waiting for JSFiddle, not Highcharts. In my Chrome browser, Highcharts renders 800 bubbles in under 200 ms: http://jsfiddle.net/highcharts/hAyzq/ http://jsfiddle.net/highcharts/hAyzq/