diff --git a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Helper/ThrottleHelper.cs b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Helper/ThrottleHelper.cs
new file mode 100644
index 0000000..8321966
--- /dev/null
+++ b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Helper/ThrottleHelper.cs
@@ -0,0 +1,37 @@
+using System;
+
+namespace BetterLyrics.WinUI3.Helper
+{
+    public class ThrottleHelper
+    {
+        private DateTime _lastTriggerTime = DateTime.MinValue;
+        private readonly TimeSpan _interval;
+
+        public ThrottleHelper(TimeSpan interval)
+        {
+            _interval = interval;
+        }
+
+        /// <summary>
+        /// 判断是否可以触发（距离上次触发已超过设定间隔），如果可以则更新时间戳并返回 true，否则返回 false。
+        /// </summary>
+        public bool CanTrigger()
+        {
+            var now = DateTime.Now;
+            if ((now - _lastTriggerTime) >= _interval)
+            {
+                _lastTriggerTime = now;
+                return true;
+            }
+            return false;
+        }
+
+        /// <summary>
+        /// 重置触发时间
+        /// </summary>
+        public void Reset()
+        {
+            _lastTriggerTime = DateTime.MinValue;
+        }
+    }
+}
\ No newline at end of file
diff --git a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Services/LibWatcherService.cs b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Services/LibWatcherService.cs
index 8fcd7d4..a276d50 100644
--- a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Services/LibWatcherService.cs
+++ b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Services/LibWatcherService.cs
@@ -69,9 +69,7 @@ namespace BetterLyrics.WinUI3.Services
 
         private void OnChanged(string folder, FileSystemEventArgs e)
         {
-            App.DispatcherQueue!.TryEnqueue(
-                Microsoft.UI.Dispatching.DispatcherQueuePriority.High,
-                () =>
+            App.DispatcherQueue!.TryEnqueue(() =>
                 {
                     MusicLibraryFilesChanged?.Invoke(
                         this,
diff --git a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Services/PlaybackService.cs b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Services/PlaybackService.cs
index 9061620..d2768c6 100644
--- a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Services/PlaybackService.cs
+++ b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/Services/PlaybackService.cs
@@ -110,9 +110,7 @@ namespace BetterLyrics.WinUI3.Services
         {
             if (!IsMediaSourceEnabled(mediaSession.ControlSession.SourceAppUserModelId) || mediaSession != _mediaManager.GetFocusedSession()) return;
 
-            _dispatcherQueue.TryEnqueue(
-                DispatcherQueuePriority.High,
-                () =>
+            _dispatcherQueue.TryEnqueue(() =>
                 {
                     PositionChanged?.Invoke(this, new PositionChangedEventArgs(timelineProperties.Position));
                 }
@@ -130,8 +128,7 @@ namespace BetterLyrics.WinUI3.Services
                 _ => false,
             };
 
-            _dispatcherQueue.TryEnqueue(DispatcherQueuePriority.High,
-                () =>
+            _dispatcherQueue.TryEnqueue(() =>
                 {
                     IsPlayingChanged?.Invoke(this, new IsPlayingChangedEventArgs(_cachedIsPlaying));
                 }
@@ -218,8 +215,7 @@ namespace BetterLyrics.WinUI3.Services
             {
                 _mediaSourceProvidersInfo.Add(new MediaSourceProviderInfo(id, true));
                 _settingsService.MediaSourceProvidersInfo = _mediaSourceProvidersInfo;
-                _dispatcherQueue.TryEnqueue(DispatcherQueuePriority.High,
-                () =>
+                _dispatcherQueue.TryEnqueue(() =>
                 {
                     MediaSourceProvidersInfoChanged?.Invoke(this, new MediaSourceProvidersInfoEventArgs(_mediaSourceProvidersInfo));
                 });
@@ -228,8 +224,7 @@ namespace BetterLyrics.WinUI3.Services
 
         private void SendNullMessages()
         {
-            _dispatcherQueue.TryEnqueue(DispatcherQueuePriority.High,
-            () =>
+            _dispatcherQueue.TryEnqueue(() =>
             {
                 _cachedSongInfo = null;
                 _cachedIsPlaying = false;
diff --git a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/BaseViewModel.cs b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/BaseViewModel.cs
index 3c1e280..253c9c5 100644
--- a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/BaseViewModel.cs
+++ b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/BaseViewModel.cs
@@ -7,22 +7,20 @@ using Microsoft.UI.Dispatching;
 
 namespace BetterLyrics.WinUI3.ViewModels
 {
-    public partial class BaseViewModel : ObservableRecipient, IDisposable
+    public partial class BaseViewModel : ObservableRecipient
     {
-        private protected readonly DispatcherQueue _dispatcherQueue =
-            DispatcherQueue.GetForCurrentThread();
+        private protected readonly DispatcherQueue _dispatcherQueue;
+
+        private protected readonly DispatcherQueueTimer _dispatcherQueueTimer;
 
         private protected readonly ISettingsService _settingsService;
 
         public BaseViewModel(ISettingsService settingsService)
         {
             IsActive = true;
+            _dispatcherQueue = DispatcherQueue.GetForCurrentThread();
+            _dispatcherQueueTimer = _dispatcherQueue.CreateTimer();
             _settingsService = settingsService;
         }
-
-        public void Dispose()
-        {
-            GC.SuppressFinalize(this);
-        }
     }
 }
diff --git a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/LyricsPageViewModel.cs b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/LyricsPageViewModel.cs
index f765226..b7eaa56 100644
--- a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/LyricsPageViewModel.cs
+++ b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/LyricsPageViewModel.cs
@@ -9,6 +9,7 @@ using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using CommunityToolkit.Mvvm.Messaging;
 using CommunityToolkit.Mvvm.Messaging.Messages;
+using CommunityToolkit.WinUI;
 using Microsoft.UI.Dispatching;
 using Microsoft.UI.Xaml;
 using System;
@@ -24,6 +25,7 @@ namespace BetterLyrics.WinUI3.ViewModels
         IRecipient<PropertyChangedMessage<TimeSpan>>
     {
         private readonly IPlaybackService _playbackService;
+        private readonly ThrottleHelper _timelineThrottle = new(TimeSpan.FromSeconds(1));
 
         public LyricsPageViewModel(ISettingsService settingsService, IPlaybackService playbackService) : base(settingsService)
         {
@@ -256,10 +258,13 @@ namespace BetterLyrics.WinUI3.ViewModels
             {
                 if (message.PropertyName == nameof(LyricsRendererViewModel.TotalTime))
                 {
-                    _dispatcherQueue.TryEnqueue(DispatcherQueuePriority.Low, () =>
+                    if (_timelineThrottle.CanTrigger())
                     {
-                        TimelinePositionSeconds = message.NewValue.TotalSeconds;
-                    });
+                        _dispatcherQueue.TryEnqueue(() =>
+                        {
+                            TimelinePositionSeconds = message.NewValue.TotalSeconds;
+                        });
+                    }
                 }
             }
         }
diff --git a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/SettingsPageViewModel.cs b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/SettingsPageViewModel.cs
index bbb6fd9..7510daa 100644
--- a/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/SettingsPageViewModel.cs
+++ b/BetterLyrics.WinUI3/BetterLyrics.WinUI3/ViewModels/SettingsPageViewModel.cs
@@ -102,7 +102,7 @@ namespace BetterLyrics.WinUI3.ViewModels
 
             Task.Run(async () =>
             {
-                BuildDate = (await Helper.MetadataHelper.GetBuildDate()).ToString("(yyyy/MM/dd HH:mm:ss)");
+                BuildDate = (await MetadataHelper.GetBuildDate()).ToString("(yyyy/MM/dd HH:mm:ss)");
             });
         }
 
@@ -258,7 +258,7 @@ namespace BetterLyrics.WinUI3.ViewModels
         public partial int LyricsVerticalEdgeOpacity { get; set; }
 
         [ObservableProperty]
-        public partial object NavViewSelectedItemTag { get; set; }
+        public partial object NavViewSelectedItemTag { get; set; } = "App";
 
         [ObservableProperty]
         [NotifyPropertyChangedRecipients]