Hierarchical Grid - Slow to expand child grids

[Reid]

Hello,

I have a grid that displays two levels.

Applications
   Client Access
    Module Access

When you click the "+" to show the child rows it takes about 8-10 seconds to expand and show the two child tables.  Each table does not have more that 40 records.

1) How can I set the cursor to wait while it happening?
2) How can I speed it up?

Here is the relevant section of the markup.

<telerik:RadGridView.HierarchyChildTemplate>
   <DataTemplate>
       <StackPanel>
              <telerik:RadGridView ItemsSource="{Binding ClientAccess}" AutoGenerateColumns="False">
                   <telerik:RadGridView.Columns>
                        <telerik:GridViewDataColumn Header="" DataMemberBinding="{Binding IsSelected}"/>
                        <telerik:GridViewDataColumn Header="Name" DataMemberBinding="{Binding Name}"/>
                        <telerik:GridViewDataColumn DataMemberBinding="{Binding SecurityLevel}" Header="Security Level" />
                          <telerik:GridViewDataColumn Header="Identity"UniqueName="Identity"/>
                    </telerik:RadGridView.Columns>
               </telerik:RadGridView>


<telerik:RadGridView ItemsSource="{Binding ToolModuleAccess}" AutoGenerateColumns="False">
        <telerik:RadGridView.Columns>
        <telerik:GridViewDataColumn Header="" DataMemberBinding="{Binding IsSelected}"/>
        <telerik:GridViewDataColumn Header="Name" DataMemberBinding="{Binding Name}"/>
        <telerik:GridViewDataColumn DataMemberBinding="{Binding SecurityLevel}" Width="100" Header="Security Level" />
         <telerik:GridViewDataColumn Header="Identity" UniqueName="Identity"/>
        </telerik:RadGridView.Columns>
 </telerik:RadGridView>
</StackPanel>

</DataTemplate>
</telerik:RadGridView.HierarchyChildTemplate>

The viewmodel and all of it's data is set prior to the form's creation.

Any help would be greatly appreciated.

Thanks!
Reid