Specifies the performance level of the TreeGrid.
A String value. The default is 'normal', stating that TreeGrid is optimized for small data sets with small to medium grid size.
The following values are acceptable:
When 'optimal' mode is selected, the grid is optimized for huge data sets with large grid sizes (1920x1200 or more). Hovering and vertical scrolling is very fast, even with 100 columns and 100,000 rows.
Supported in: v3.2.