diff --git a/v2rayN/ServiceLib/Handler/ConfigHandler.cs b/v2rayN/ServiceLib/Handler/ConfigHandler.cs
index 464a8222..994d4284 100644
--- a/v2rayN/ServiceLib/Handler/ConfigHandler.cs
+++ b/v2rayN/ServiceLib/Handler/ConfigHandler.cs
@@ -125,6 +125,10 @@ namespace ServiceLib.Handler
             {
                 config.SpeedTestItem.SpeedPingTestUrl = Global.SpeedPingTestUrl;
             }
+            if (config.SpeedTestItem.MixedConcurrencyCount < 1)
+            {
+                config.SpeedTestItem.MixedConcurrencyCount = 5;
+            }
 
             config.Mux4RayItem ??= new()
             {
diff --git a/v2rayN/ServiceLib/Handler/CoreHandler.cs b/v2rayN/ServiceLib/Handler/CoreHandler.cs
index 08615879..7f7a3c9a 100644
--- a/v2rayN/ServiceLib/Handler/CoreHandler.cs
+++ b/v2rayN/ServiceLib/Handler/CoreHandler.cs
@@ -141,7 +141,7 @@ namespace ServiceLib.Handler
 
             var coreType = AppHandler.Instance.GetCoreType(node, node.ConfigType);
             var coreInfo = CoreInfoHandler.Instance.GetCoreInfo(coreType);
-            var proc = await CoreHandler.Instance.RunProcess(coreInfo, fileName, true, false);
+            var proc = await RunProcess(coreInfo, fileName, true, false);
             if (proc is null)
             {
                 return -1;
diff --git a/v2rayN/ServiceLib/Models/ConfigItems.cs b/v2rayN/ServiceLib/Models/ConfigItems.cs
index 0a5cf36c..b7fd31fe 100644
--- a/v2rayN/ServiceLib/Models/ConfigItems.cs
+++ b/v2rayN/ServiceLib/Models/ConfigItems.cs
@@ -156,6 +156,7 @@ namespace ServiceLib.Models
         public int SpeedTestTimeout { get; set; }
         public string SpeedTestUrl { get; set; }
         public string SpeedPingTestUrl { get; set; }
+        public int MixedConcurrencyCount { get; set; }
     }
 
     [Serializable]
diff --git a/v2rayN/ServiceLib/Resx/ResUI.Designer.cs b/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
index b793d15e..9872f880 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
+++ b/v2rayN/ServiceLib/Resx/ResUI.Designer.cs
@@ -3220,6 +3220,15 @@ namespace ServiceLib.Resx {
             }
         }
         
+        /// <summary>
+        ///   查找类似 Number per time for auto batch during speedtest(max 1000) 的本地化字符串。
+        /// </summary>
+        public static string TbSettingsMixedConcurrencyCount {
+            get {
+                return ResourceManager.GetString("TbSettingsMixedConcurrencyCount", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   查找类似 sing-box Mux Protocol 的本地化字符串。
         /// </summary>
diff --git a/v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx b/v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx
index 459abca2..2fbc1581 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.fa-Ir.resx
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
@@ -1372,6 +1372,9 @@
   <data name="TbSettingsHide2TrayWhenClose" xml:space="preserve">
     <value>هنگام بستن پنجره در سینی پنهان شوید</value>
   </data>
+  <data name="TbSettingsMixedConcurrencyCount" xml:space="preserve">
+    <value>The number of concurrent during multi-test</value>
+  </data>
   <data name="TbSettingsExceptionTip2" xml:space="preserve">
     <value>موارد استثنا: از سرور پروکسی برای آدرس های زیر استفاده نکنید. برای جدا کردن ورودی ها از کاما (،) استفاده کنید.</value>
   </data>
diff --git a/v2rayN/ServiceLib/Resx/ResUI.hu.resx b/v2rayN/ServiceLib/Resx/ResUI.hu.resx
index f4a2b17c..eedf8d5a 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.hu.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.hu.resx
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
@@ -1372,6 +1372,9 @@
   <data name="TbSettingsHide2TrayWhenClose" xml:space="preserve">
     <value>Minimálás tálcára ablak zárásakor</value>
   </data>
+  <data name="TbSettingsMixedConcurrencyCount" xml:space="preserve">
+    <value>The number of concurrent during multi-test</value>
+  </data>
   <data name="TbSettingsExceptionTip2" xml:space="preserve">
     <value>Kivétel. Ne használj proxy szervert a címeknél, évezz pontosvesszőt (,)</value>
   </data>
diff --git a/v2rayN/ServiceLib/Resx/ResUI.resx b/v2rayN/ServiceLib/Resx/ResUI.resx
index 7c4996ba..2ee8aa8b 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.resx
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
@@ -1372,6 +1372,9 @@
   <data name="TbSettingsHide2TrayWhenClose" xml:space="preserve">
     <value>Hide to tray when closing the window</value>
   </data>
+  <data name="TbSettingsMixedConcurrencyCount" xml:space="preserve">
+    <value>The number of concurrent during multi-test</value>
+  </data>
   <data name="TbSettingsExceptionTip2" xml:space="preserve">
     <value>Exclusions: Do not use proxy server for the following addresses. Use comma (,) to separate entries.</value>
   </data>
diff --git a/v2rayN/ServiceLib/Resx/ResUI.ru.resx b/v2rayN/ServiceLib/Resx/ResUI.ru.resx
index db781636..9278636a 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.ru.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.ru.resx
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
@@ -1372,6 +1372,9 @@
   <data name="TbSettingsHide2TrayWhenClose" xml:space="preserve">
     <value>Hide to tray when closing the window</value>
   </data>
+  <data name="TbSettingsMixedConcurrencyCount" xml:space="preserve">
+    <value>The number of concurrent during multi-test</value>
+  </data>
   <data name="TbSettingsExceptionTip2" xml:space="preserve">
     <value>Exception. Do not use proxy server for addresses,with a comma (,)</value>
   </data>
diff --git a/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx b/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx
index c5faaa89..5c55a8ed 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.zh-Hans.resx
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <root>
   <!-- 
     Microsoft ResX Schema 
@@ -1369,6 +1369,9 @@
   <data name="TbSettingsHide2TrayWhenClose" xml:space="preserve">
     <value>关闭窗口时隐藏至托盘</value>
   </data>
+  <data name="TbSettingsMixedConcurrencyCount" xml:space="preserve">
+    <value>多线程测试时的并发数量</value>
+  </data>
   <data name="TbSettingsExceptionTip2" xml:space="preserve">
     <value>例外：对于下列地址不使用代理配置文件。使用逗号(,)分隔。</value>
   </data>
diff --git a/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx b/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx
index 268acab0..cddc4645 100644
--- a/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx
+++ b/v2rayN/ServiceLib/Resx/ResUI.zh-Hant.resx
@@ -1370,6 +1370,9 @@
   <data name="TbSettingsHide2TrayWhenClose" xml:space="preserve">
     <value>關閉視窗時隱藏至托盤</value>
   </data>
+  <data name="TbSettingsMixedConcurrencyCount" xml:space="preserve">
+    <value>多執行緒測試時的並發數量</value>
+  </data>
   <data name="TbSettingsExceptionTip2" xml:space="preserve">
     <value>例外：對於下列位址不使用代理設定檔，使用逗號(,)分隔。</value>
   </data>
diff --git a/v2rayN/ServiceLib/Services/SpeedtestService.cs b/v2rayN/ServiceLib/Services/SpeedtestService.cs
index 51d57db9..eb6b306a 100644
--- a/v2rayN/ServiceLib/Services/SpeedtestService.cs
+++ b/v2rayN/ServiceLib/Services/SpeedtestService.cs
@@ -62,7 +62,7 @@ namespace ServiceLib.Services
                     break;
 
                 case ESpeedActionType.Mixedtest:
-                    await RunMixedTestAsync(lstSelected, 6, true, exitLoopKey);
+                    await RunMixedTestAsync(lstSelected, _config.SpeedTestItem.MixedConcurrencyCount, true, exitLoopKey);
                     break;
             }
         }
@@ -178,13 +178,13 @@ namespace ServiceLib.Services
 
                 UpdateFunc("", string.Format(ResUI.SpeedtestingTestFailedPart, lstFailed.Count));
 
-                if (pageSizeNext > 6)
+                if (pageSizeNext > _config.SpeedTestItem.MixedConcurrencyCount)
                 {
                     await RunRealPingBatchAsync(lstFailed, exitLoopKey, pageSizeNext);
                 }
                 else
                 {
-                    await RunMixedTestAsync(lstSelected, 6, false, exitLoopKey);
+                    await RunMixedTestAsync(lstSelected, _config.SpeedTestItem.MixedConcurrencyCount, false, exitLoopKey);
                 }
             }
         }
diff --git a/v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs b/v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs
index efa5a0e6..378b374c 100644
--- a/v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/OptionSettingViewModel.cs
@@ -63,6 +63,7 @@ namespace ServiceLib.ViewModels
         [Reactive] public int SpeedTestTimeout { get; set; }
         [Reactive] public string SpeedTestUrl { get; set; }
         [Reactive] public string SpeedPingTestUrl { get; set; }
+        [Reactive] public int MixedConcurrencyCount { get; set; }
         [Reactive] public bool EnableHWA { get; set; }
         [Reactive] public string SubConvertUrl { get; set; }
         [Reactive] public int MainGirdOrientation { get; set; }
@@ -177,6 +178,7 @@ namespace ServiceLib.ViewModels
             CurrentFontFamily = _config.UiItem.CurrentFontFamily;
             SpeedTestTimeout = _config.SpeedTestItem.SpeedTestTimeout;
             SpeedTestUrl = _config.SpeedTestItem.SpeedTestUrl;
+            MixedConcurrencyCount = _config.SpeedTestItem.MixedConcurrencyCount;
             SpeedPingTestUrl = _config.SpeedTestItem.SpeedPingTestUrl;
             EnableHWA = _config.GuiItem.EnableHWA;
             SubConvertUrl = _config.ConstItem.SubConvertUrl;
@@ -330,6 +332,7 @@ namespace ServiceLib.ViewModels
             _config.GuiItem.TrayMenuServersLimit = TrayMenuServersLimit;
             _config.UiItem.CurrentFontFamily = CurrentFontFamily;
             _config.SpeedTestItem.SpeedTestTimeout = SpeedTestTimeout;
+            _config.SpeedTestItem.MixedConcurrencyCount = MixedConcurrencyCount;
             _config.SpeedTestItem.SpeedTestUrl = SpeedTestUrl;
             _config.SpeedTestItem.SpeedPingTestUrl = SpeedPingTestUrl;
             _config.GuiItem.EnableHWA = EnableHWA;
diff --git a/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml b/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml
index f658087a..65cd3310 100644
--- a/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml
+++ b/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml
@@ -518,7 +518,20 @@
                             Classes="Margin8"
                             Text="{x:Static resx:ResUI.TbSettingsCurrentFontFamilyLinuxTip}"
                             TextWrapping="Wrap" />
-                  
+
+                        <TextBlock
+                            Grid.Row="16"
+                            Grid.Column="0"
+                            VerticalAlignment="Center"
+                            Classes="Margin8"
+                            Text="{x:Static resx:ResUI.TbSettingsMixedConcurrencyCount}" />
+                        <ComboBox
+                            x:Name="cmbMixedConcurrencyCount"
+                            Grid.Row="16"
+                            Grid.Column="1"
+                            Width="200"
+                            Classes="Margin8" />
+
                         <TextBlock
                             Grid.Row="17"
                             Grid.Column="0"
diff --git a/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs b/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs
index acd111dd..03f0ca59 100644
--- a/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/OptionSettingWindow.axaml.cs
@@ -66,7 +66,11 @@ namespace v2rayN.Desktop.Views
                 cmbCoreType6.Items.Add(it);
             });
 
-            for (int i = 2; i <= 6; i++)
+            for (var i = 2; i <= 8; i++)
+            {
+                cmbMixedConcurrencyCount.Items.Add(i);
+            }
+            for (var i = 2; i <= 6; i++)
             {
                 cmbSpeedTestTimeout.Items.Add(i * 5);
             }
@@ -139,6 +143,7 @@ namespace v2rayN.Desktop.Views
                 this.Bind(ViewModel, vm => vm.SpeedTestTimeout, v => v.cmbSpeedTestTimeout.SelectedValue).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SpeedTestUrl, v => v.cmbSpeedTestUrl.SelectedValue).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SpeedPingTestUrl, v => v.cmbSpeedPingTestUrl.SelectedValue).DisposeWith(disposables);
+                this.Bind(ViewModel, vm => vm.MixedConcurrencyCount, v => v.cmbMixedConcurrencyCount.SelectedValue).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SubConvertUrl, v => v.cmbSubConvertUrl.SelectedValue).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.MainGirdOrientation, v => v.cmbMainGirdOrientation.SelectedIndex).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.GeoFileSourceUrl, v => v.cmbGetFilesSourceUrl.SelectedValue).DisposeWith(disposables);
diff --git a/v2rayN/v2rayN/Views/OptionSettingWindow.xaml b/v2rayN/v2rayN/Views/OptionSettingWindow.xaml
index eef19974..52449548 100644
--- a/v2rayN/v2rayN/Views/OptionSettingWindow.xaml
+++ b/v2rayN/v2rayN/Views/OptionSettingWindow.xaml
@@ -776,7 +776,22 @@
                             Style="{StaticResource ToolbarTextBlock}"
                             Text="{x:Static resx:ResUI.TbSettingsCurrentFontFamilyTip}"
                             TextWrapping="Wrap" />
-                       
+
+                        <TextBlock
+                            Grid.Row="16"
+                            Grid.Column="0"
+                            Margin="{StaticResource Margin8}"
+                            VerticalAlignment="Center"
+                            Style="{StaticResource ToolbarTextBlock}"
+                            Text="{x:Static resx:ResUI.TbSettingsMixedConcurrencyCount}" />
+                        <ComboBox
+                            x:Name="cmbMixedConcurrencyCount"
+                            Grid.Row="16"
+                            Grid.Column="1"
+                            Width="200"
+                            Margin="{StaticResource Margin8}"
+                            Style="{StaticResource DefComboBox}" />
+
                         <TextBlock
                             Grid.Row="17"
                             Grid.Column="0"
diff --git a/v2rayN/v2rayN/Views/OptionSettingWindow.xaml.cs b/v2rayN/v2rayN/Views/OptionSettingWindow.xaml.cs
index 9027cdcb..b6acb033 100644
--- a/v2rayN/v2rayN/Views/OptionSettingWindow.xaml.cs
+++ b/v2rayN/v2rayN/Views/OptionSettingWindow.xaml.cs
@@ -68,7 +68,11 @@ namespace v2rayN.Views
                 cmbCoreType6.Items.Add(it);
             });
 
-            for (int i = 2; i <= 6; i++)
+            for (var i = 2; i <= 8; i++)
+            {
+                cmbMixedConcurrencyCount.Items.Add(i);
+            }
+            for (var i = 2; i <= 6; i++)
             {
                 cmbSpeedTestTimeout.Items.Add(i * 5);
             }
@@ -150,6 +154,7 @@ namespace v2rayN.Views
                 this.Bind(ViewModel, vm => vm.SpeedTestTimeout, v => v.cmbSpeedTestTimeout.Text).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SpeedTestUrl, v => v.cmbSpeedTestUrl.Text).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SpeedPingTestUrl, v => v.cmbSpeedPingTestUrl.Text).DisposeWith(disposables);
+                this.Bind(ViewModel, vm => vm.MixedConcurrencyCount, v => v.cmbMixedConcurrencyCount.Text).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.EnableHWA, v => v.togEnableHWA.IsChecked).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.SubConvertUrl, v => v.cmbSubConvertUrl.Text).DisposeWith(disposables);
                 this.Bind(ViewModel, vm => vm.MainGirdOrientation, v => v.cmbMainGirdOrientation.SelectedIndex).DisposeWith(disposables);