diff --git a/CHANGELOG.md b/CHANGELOG.md
index 169d898..a49a84f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## v1.0.3 (2026-05-10)
+
+### 更改
+- **刷新率从 100ms 提升至 30ms**，速度曲线更新更加丝滑
+- 历史数据点从 600 增至 2000，保持约 60 秒曲线窗口
+
 ## v1.0.2 (2026-05-09)
 
 ### 更改
diff --git a/SettingsWindow.xaml b/SettingsWindow.xaml
index 0c6fece..1384b31 100644
--- a/SettingsWindow.xaml
+++ b/SettingsWindow.xaml
@@ -98,7 +98,7 @@
         </Button>
 
         <!-- Version -->
-        <TextBlock Grid.Row="10" Text="Version 1.0.2"
+        <TextBlock Grid.Row="10" Text="Version 1.0.3"
                    FontSize="11" Foreground="#FF1E293B"
                    HorizontalAlignment="Center"
                    Margin="0,16,0,0" />
diff --git a/ViewModels/MainViewModel.cs b/ViewModels/MainViewModel.cs
index 0b0169e..576fa1f 100644
--- a/ViewModels/MainViewModel.cs
+++ b/ViewModels/MainViewModel.cs
@@ -22,14 +22,14 @@ public class MainViewModel : INotifyPropertyChanged, IDisposable
     private DateTime _lastNodeFetchTime = DateTime.MinValue;
     private bool _isPolling;
     private string? _groupName;
-    private const int MaxHistoryPoints = 600;
+    private const int MaxHistoryPoints = 2000;
     private static readonly TimeSpan NodeFetchInterval = TimeSpan.FromSeconds(3);
 
     public MainViewModel()
     {
         var config = ConfigService.Load();
         _apiService = new ClashApiService(config);
-        _speedTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(100) };
+        _speedTimer = new DispatcherTimer { Interval = TimeSpan.FromMilliseconds(30) };
         _speedTimer.Tick += OnSpeedTimerTick;
     }