diff --git a/src/tests/MyNet.Wpf.TestApp/ViewModels/Contents/PerfDialogViewModel.cs b/src/tests/MyNet.Wpf.TestApp/ViewModels/Contents/PerfDialogViewModel.cs
new file mode 100644
index 0000000..17e5015
--- /dev/null
+++ b/src/tests/MyNet.Wpf.TestApp/ViewModels/Contents/PerfDialogViewModel.cs
@@ -0,0 +1,14 @@
+// Copyright (c) Stéphane ANDRE. All Right Reserved.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.ObjectModel;
+using MyNet.UI.ViewModels.Dialogs;
+using MyNet.Utilities.Helpers;
+
+namespace MyNet.Wpf.TestApp.ViewModels.Contents
+{
+    internal class PerfDialogViewModel : DialogViewModel
+    {
+        public ObservableCollection<int>? List { get; } = new(EnumerableHelper.Range(1, 1000, 1));
+    }
+}
diff --git a/src/tests/MyNet.Wpf.TestApp/ViewModels/DialogsWindowsViewModel.cs b/src/tests/MyNet.Wpf.TestApp/ViewModels/DialogsWindowsViewModel.cs
index b8c2b06..127daa7 100644
--- a/src/tests/MyNet.Wpf.TestApp/ViewModels/DialogsWindowsViewModel.cs
+++ b/src/tests/MyNet.Wpf.TestApp/ViewModels/DialogsWindowsViewModel.cs
@@ -25,6 +25,10 @@ internal class DialogsWindowsViewModel : NavigableWorkspaceViewModel
 
         public ICommand OpenCustomNonDialogCommand { get; set; }
 
+        public ICommand OpenPerfNonDialogCommand { get; set; }
+
+        public ICommand OpenPerfDialogCommand { get; set; }
+
         public DialogsWindowsViewModel()
         {
             OpenMessageDialogCommand = CommandsManager.Create<string>(async x =>
@@ -109,6 +113,18 @@ public DialogsWindowsViewModel()
                 var vm = new LoginDialogViewModel();
                 await WindowDialogManager.ShowAsync(vm, x => ShowToasterResult(x)).ConfigureAwait(false);
             });
+
+            OpenPerfNonDialogCommand = CommandsManager.Create(async () =>
+            {
+                using var vm = new PerfDialogViewModel();
+                await WindowDialogManager.ShowAsync(vm).ConfigureAwait(false);
+            });
+
+            OpenPerfDialogCommand = CommandsManager.Create(async () =>
+            {
+                using var vm = new PerfDialogViewModel();
+                await WindowDialogManager.ShowDialogAsync(vm).ConfigureAwait(false);
+            });
         }
 
         private static void ShowToasterResult(LoginDialogViewModel viewModel)
diff --git a/src/tests/MyNet.Wpf.TestApp/Views/Contents/PerfDialogView.xaml b/src/tests/MyNet.Wpf.TestApp/Views/Contents/PerfDialogView.xaml
new file mode 100644
index 0000000..1dad4a1
--- /dev/null
+++ b/src/tests/MyNet.Wpf.TestApp/Views/Contents/PerfDialogView.xaml
@@ -0,0 +1,33 @@
+<my:ContentDialog x:Class="MyNet.Wpf.TestApp.Views.Contents.PerfDialogView"
+                  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+                  xmlns:contents="clr-namespace:MyNet.Wpf.TestApp.ViewModels.Contents"
+                  xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+                  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+                  xmlns:my="http://mynet.com/xaml/themes"
+                  d:DataContext="{d:DesignInstance Type=contents:PerfDialogViewModel}"
+                  d:DesignHeight="450"
+                  Width="800"
+                  Height="800"
+                  d:DesignWidth="800"
+                  Header="{Binding Title}"
+                  ShowCloseButton="True"
+                  mc:Ignorable="d">
+
+    <ItemsControl ItemsSource="{Binding List}">
+        <ItemsControl.ItemsPanel>
+            <ItemsPanelTemplate>
+                <WrapPanel IsItemsHost="True" Orientation="Horizontal" />
+            </ItemsPanelTemplate>
+        </ItemsControl.ItemsPanel>
+        <ItemsControl.ItemTemplate>
+            <DataTemplate>
+                <my:SimpleStackPanel Orientation="Horizontal" Margin="{StaticResource MyNet.Margins.Default}">
+                    <my:NumericUpDown Value="{Binding Mode=OneWay}" />
+                    <Button Style="{StaticResource MyNet.Styles.Button.Icon.Tool.ClipBoard}" CommandParameter="{Binding}" />
+                </my:SimpleStackPanel>
+            </DataTemplate>
+        </ItemsControl.ItemTemplate>
+    </ItemsControl>
+
+</my:ContentDialog>
diff --git a/src/tests/MyNet.Wpf.TestApp/Views/Contents/PerfDialogView.xaml.cs b/src/tests/MyNet.Wpf.TestApp/Views/Contents/PerfDialogView.xaml.cs
new file mode 100644
index 0000000..98af826
--- /dev/null
+++ b/src/tests/MyNet.Wpf.TestApp/Views/Contents/PerfDialogView.xaml.cs
@@ -0,0 +1,13 @@
+// Copyright (c) Stéphane ANDRE. All Right Reserved.
+// See the LICENSE file in the project root for more information.
+
+using MyNet.UI.Attributes;
+
+namespace MyNet.Wpf.TestApp.Views.Contents
+{
+    [IsTransient]
+    public partial class PerfDialogView
+    {
+        public PerfDialogView() => InitializeComponent();
+    }
+}
diff --git a/src/tests/MyNet.Wpf.TestApp/Views/DialogsView.Windows.xaml b/src/tests/MyNet.Wpf.TestApp/Views/DialogsView.Windows.xaml
index cd38785..26c649b 100644
--- a/src/tests/MyNet.Wpf.TestApp/Views/DialogsView.Windows.xaml
+++ b/src/tests/MyNet.Wpf.TestApp/Views/DialogsView.Windows.xaml
@@ -74,6 +74,14 @@
                                 Width="150"
                                 Command="{Binding OpenCustomNonDialogCommand}"
                                 Content="NON DIALOG" />
+                        <Button Style="{StaticResource MyNet.Styles.Button.Elevation}"
+                                Width="150"
+                                Command="{Binding OpenPerfDialogCommand}"
+                                Content="PERF DIALOG" />
+                        <Button Style="{StaticResource MyNet.Styles.Button.Elevation}"
+                                Width="150"
+                                Command="{Binding OpenPerfNonDialogCommand}"
+                                Content="PERF NON DIALOG" />
                     </my:SimpleStackPanel>
                 </my:SimpleStackPanel>
             </Expander>