ListBox中的WPF性能问题

<ListBox x:Name="myListBox" VirtualizingPanel.IsVirtualizing="True" VirtualizingPanel.VirtualizationMode="Recycling">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding}" />
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

List<string> data = new List<string>();
// 填充数据
myListBox.ItemsSource = data;

<DataTemplate>
    <TextBlock Text="{Binding}" />
</DataTemplate>

public void LoadData(int page, int pageSize)
{
    var pagedData = GetData(page, pageSize);
    myListBox.ItemsSource = pagedData;
}

Task.Run(() =>
{
    var data = LoadLargeData();
    Dispatcher.Invoke(() => myListBox.ItemsSource = data);
});

<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <ListBox x:Name="myListBox" VirtualizingPanel.IsVirtualizing="True" VirtualizingPanel.VirtualizationMode="Recycling">
            <ListBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding}" />
                </DataTemplate>
            </ListBox.ItemTemplate>
        </ListBox>
    </Grid>
</Window>

using System.Collections.Generic;
using System.Windows;

namespace WpfApp
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            LoadData();
        }

        private void LoadData()
        {
            List<string> data = new List<string>();
            for (int i = 0; i < 100000; i++)
            {
                data.Add($"Item {i}");
            }
            myListBox.ItemsSource = data;
        }
    }
}