diff --git a/OngekiFumenEditor/Kernel/Audio/DefaultCommonImpl/Sound/DefaultFumenSoundPlayer.cs b/OngekiFumenEditor/Kernel/Audio/DefaultCommonImpl/Sound/DefaultFumenSoundPlayer.cs
index d1efa847..f4b7fba3 100644
--- a/OngekiFumenEditor/Kernel/Audio/DefaultCommonImpl/Sound/DefaultFumenSoundPlayer.cs
+++ b/OngekiFumenEditor/Kernel/Audio/DefaultCommonImpl/Sound/DefaultFumenSoundPlayer.cs
@@ -11,6 +11,7 @@
 using OngekiFumenEditor.Utils.ObjectPool;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.ComponentModel.Composition;
 using System.IO;
 using System.Linq;
@@ -121,7 +122,8 @@ async Task load(SoundControl sound, string fileName)
 
             if (!noError)
             {
-                MessageBox.Show(Resources.WarnSomeSoundsNotLoad);
+                if (!DesignerProperties.GetIsInDesignMode(new DependencyObject()))
+                    MessageBox.Show(Resources.WarnSomeSoundsNotLoad);
                 source.SetResult(false);
                 return;
             }
diff --git a/OngekiFumenEditor/Kernel/Audio/NAudioImpl/Music/DefaultMusicPlayer.cs b/OngekiFumenEditor/Kernel/Audio/NAudioImpl/Music/DefaultMusicPlayer.cs
index c6d12197..48ae2beb 100644
--- a/OngekiFumenEditor/Kernel/Audio/NAudioImpl/Music/DefaultMusicPlayer.cs
+++ b/OngekiFumenEditor/Kernel/Audio/NAudioImpl/Music/DefaultMusicPlayer.cs
@@ -144,7 +144,7 @@ private TimeSpan GetTime()
             if (!IsPlaying)
                 return pauseTime;
             var offset = TimeSpan.FromTicks(sw.ElapsedTicks) * manager.MusicSpeed;
-            var adjustedTime = offset + baseOffset - TimeSpan.FromMilliseconds(manager.SpeedCostDelayMs);
+            var adjustedTime = offset + baseOffset - TimeSpan.FromMilliseconds(manager.SpeedCostDelayMs / 2);
             var actualTime = MathUtils.Max(TimeSpan.Zero, adjustedTime);
             return actualTime;
         }
diff --git a/OngekiFumenEditor/Kernel/Audio/NAudioImpl/NAudioManager.cs b/OngekiFumenEditor/Kernel/Audio/NAudioImpl/NAudioManager.cs
index 7bb7071e..aca85b04 100644
--- a/OngekiFumenEditor/Kernel/Audio/NAudioImpl/NAudioManager.cs
+++ b/OngekiFumenEditor/Kernel/Audio/NAudioImpl/NAudioManager.cs
@@ -96,7 +96,7 @@ public NAudioManager()
             enableSoundMultiPlay = AudioSetting.Default.EnableSoundMultiPlay;
             targetSampleRate = AudioSetting.Default.AudioSampleRate;
             enableVarspeed = AudioSetting.Default.EnableVarspeed;
-            SpeedCostDelayMs = AudioSetting.Default.VarspeedReadDurationMs;
+            SpeedCostDelayMs = enableVarspeed ? AudioSetting.Default.VarspeedReadDurationMs : 0;
 
             Log.LogDebug($"targetSampleRate: {targetSampleRate}");
             Log.LogDebug($"audioOutputType: {audioOutputType}");
diff --git a/OngekiFumenEditor/Kernel/SettingPages/Audio/Views/AudioSettingView.xaml b/OngekiFumenEditor/Kernel/SettingPages/Audio/Views/AudioSettingView.xaml
index 4d31f8c0..25c0c6fd 100644
--- a/OngekiFumenEditor/Kernel/SettingPages/Audio/Views/AudioSettingView.xaml
+++ b/OngekiFumenEditor/Kernel/SettingPages/Audio/Views/AudioSettingView.xaml
@@ -34,6 +34,27 @@
                 </StackPanel>
             </StackPanel>
         </GroupBox>
+        <GroupBox Margin="5" Header="{markup:Translate [Music]}">
+            <StackPanel Margin="10">
+                <CheckBox
+                    VerticalContentAlignment="Center"
+                    Content="允许变速播放音乐 (需要重启程序)"
+                    IsChecked="{Binding Setting.EnableVarspeed}" />
+                <StackPanel
+                    Margin="20,10,0,0"
+                    IsEnabled="{Binding Setting.EnableVarspeed}"
+                    Orientation="Horizontal">
+                    <TextBlock VerticalAlignment="Center" Text="变速采样缓存时间窗口" />
+                    <TextBox
+                        Width="50"
+                        Margin="5,0"
+                        VerticalAlignment="Center"
+                        Text="{Binding Setting.VarspeedReadDurationMs}">
+                    </TextBox>
+                    <TextBlock VerticalAlignment="Center" Text="毫秒" />
+                </StackPanel>
+            </StackPanel>
+        </GroupBox>
         <GroupBox Margin="5" Header="{markup:Translate [Sound]}">
             <StackPanel Margin="10">
                 <Grid>
diff --git a/OngekiFumenEditor/Modules/AudioPlayerToolViewer/Views/AudioPlayerToolViewerView.xaml b/OngekiFumenEditor/Modules/AudioPlayerToolViewer/Views/AudioPlayerToolViewerView.xaml
index f78094cf..8ef4a15f 100644
--- a/OngekiFumenEditor/Modules/AudioPlayerToolViewer/Views/AudioPlayerToolViewerView.xaml
+++ b/OngekiFumenEditor/Modules/AudioPlayerToolViewer/Views/AudioPlayerToolViewerView.xaml
@@ -253,26 +253,21 @@
                             Content="{markup:Translate [EnableVisualizerDisplay]}"
                             IsChecked="{Binding IsShowWaveform}">
                         </CheckBox>
-                        <StackPanel
+
+                        <Grid
                             Margin="5"
                             HorizontalAlignment="Stretch"
-                            IsEnabled="{Binding AudioPlayer.IsPlaying, Converter={StaticResource ReverseBoolConverter}}"
-                            Orientation="Horizontal">
-                            <TextBlock VerticalAlignment="Center" Text="{markup:Translate [Speed]}" />
-                            <Slider
-                                Width="150"
-                                Margin="5,0,0,0"
-                                VerticalAlignment="Stretch"
-                                VerticalContentAlignment="Center"
-                                IsEnabled="{Binding AudioPlayer.IsAvaliable}"
-                                IsSnapToTickEnabled="True"
-                                Maximum="1.25"
-                                Minimum="0.25"
-                                TickFrequency="0.25"
-                                TickPlacement="BottomRight"
-                                Value="{Binding MusicSpeed}">
-                            </Slider>
-                        </StackPanel>
+                            IsEnabled="{Binding AudioPlayer.IsPlaying, Converter={StaticResource ReverseBoolConverter}}">
+                            <controls:RangeValue
+                                Grid.ColumnSpan="2"
+                                Padding="0,5,0,5"
+                                CurrentValue="{Binding MusicSpeed, Mode=TwoWay}"
+                                DisplayName="{markup:Translate [Speed]}"
+                                MaxValue="1.25"
+                                MinValue="0.75"
+                                Step="0.05">
+                            </controls:RangeValue>
+                        </Grid>
                         <StackPanel
                             Margin="5"
                             HorizontalAlignment="Stretch"