UWP TreeView Performance Issue

MainPage.xaml

<Page
    x:Class="App.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:App"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">

    <Grid>
        <TreeView Name="KeywordTreeView"
                  ItemsSource="{x:Bind Nodes}">
            <TreeView.ItemTemplate>
                <DataTemplate x:DataType="local:Node">
                    <TreeViewItem ItemsSource="{x:Bind ChildNodes}"
                                  IsExpanded="True"
                                  Content="{x:Bind Name}"/>
                </DataTemplate>
            </TreeView.ItemTemplate>
        </TreeView>
    </Grid>
</Page>

MainPage.xaml.cs

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// The Blank Page item template is documented at https://go.microsoft.com/fwlink/?LinkId=402352&clcid=0x409

namespace App2
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class MainPage : Page
    {
        public MainPage()
        {
            this.InitializeComponent();

            this.Nodes = new ObservableCollection<Node>();
            for (int i = 0; i < 100; i++)
            {
                this.Nodes.Add(CreateNode(i.ToString(), 5));
            }
        }

        public ObservableCollection<Node> Nodes { get; }

        private static Node CreateNode(string name, int depth)
        {
            Node node = new Node(name);
            if (depth > 0)
            {
                depth--;
                for (int i = 0; i < 10; i++)
                {
                    node.ChildNodes.Add(CreateNode(name + i, depth));
                }
            }

            return node;
        }
    }

    public class Node
    {
        public Node(string name)
        {
            this.Name = name;
        }

        public string Name { get; }
        public ObservableCollection<Node> ChildNodes { get; } = new ObservableCollection<Node>();
    }
}