# Welcome to the Highcharts Gantt JS (gantt) Options Reference

These pages outline the chart configuration options, and the methods and properties of Highcharts objects.

Feel free to search this API through the search bar or the navigation tree in the sidebar.

# plotOptions.xrange.turboThreshold

When a series contains a `data` array that is longer than this, the Series class looks for data configurations of plain numbers or arrays of numbers. The first and last valid points are checked. If found, the rest of the data is assumed to be the same. This saves expensive data checking and indexing in long series, and makes data-heavy charts render faster.

Set it to `0` disable.

Note:

- In boost mode turbo threshold is forced. Only array of numbers or two dimensional arrays are allowed.
- In version 11.4.3 and earlier, if object configurations were passed beyond the turbo threshold, a warning was logged in the console and the data series didn't render.