How to set defer layout update in PivotGrid?

It can be achieved by setting the property DeferLayoutUpdate to true via code or through the DeferLayoutUpdate check-box (UI option) inside PivotSchemaDesigner control.

If through XAML, please refer the below code sample.

XAML

<syncfusion:PivotGridControl HorizontalAlignment="Left" Name="pivotGrid" VerticalAlignment="Top" 
                 DeferLayoutUpdate="True" ItemSource="{Binding   Source={StaticResource data}}" >
        </syncfusion:PivotGridControl>

Else if through Code-behind, please refer the below code sample.

C#

public MainWindow()
        {
            InitializeComponent();
            pivotGrid.DeferLayoutUpdate = true;
        }