diff --git a/v2rayN/ServiceLib/ViewModels/CheckUpdateViewModel.cs b/v2rayN/ServiceLib/ViewModels/CheckUpdateViewModel.cs
index e2a8a3ce..1db559b4 100644
--- a/v2rayN/ServiceLib/ViewModels/CheckUpdateViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/CheckUpdateViewModel.cs
@@ -43,14 +43,14 @@ public class CheckUpdateViewModel : MyReactiveObject
 
     private void RefreshCheckUpdateItems()
     {
+        var models = CoreInfoManager.Instance.GetCheckUpdateCoreTypes()
+                        .Select(t => GetCheckUpdateModel(t))
+                        .ToList();
+
+        models.Add(GetGeoFileCheckUpdateModel());
+
         CheckUpdateModels.Clear();
-
-        foreach (var type in CoreInfoManager.Instance.GetCheckUpdateCoreTypes())
-        {
-            CheckUpdateModels.Add(GetCheckUpdateModel(type));
-        }
-
-        CheckUpdateModels.Add(GetGeoFileCheckUpdateModel());
+        CheckUpdateModels.AddRange(models);
     }
 
     private CheckUpdateModel GetCheckUpdateModel(ECoreType coreType)
diff --git a/v2rayN/ServiceLib/ViewModels/ClashProxiesViewModel.cs b/v2rayN/ServiceLib/ViewModels/ClashProxiesViewModel.cs
index 84442e57..f327c4df 100644
--- a/v2rayN/ServiceLib/ViewModels/ClashProxiesViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/ClashProxiesViewModel.cs
@@ -187,6 +187,7 @@ public class ClashProxiesViewModel : MyReactiveObject
         var selectedName = SelectedGroup?.Name;
         ProxyGroups.Clear();
 
+        var lstProxyGroups = new List<ClashProxyModel>();
         var proxyGroups = ClashApiManager.Instance.GetClashProxyGroups();
         if (proxyGroups is { Count: > 0 })
         {
@@ -200,7 +201,7 @@ public class ClashProxiesViewModel : MyReactiveObject
                 {
                     continue;
                 }
-                ProxyGroups.Add(new ClashProxyModel()
+                lstProxyGroups.Add(new ClashProxyModel()
                 {
                     Now = item.now,
                     Name = item.name,
@@ -216,12 +217,12 @@ public class ClashProxiesViewModel : MyReactiveObject
             {
                 continue;
             }
-            var item = ProxyGroups.FirstOrDefault(t => t.Name == kv.Key);
+            var item = lstProxyGroups.FirstOrDefault(t => t.Name == kv.Key);
             if (item != null && item.Name.IsNotEmpty())
             {
                 continue;
             }
-            ProxyGroups.Add(new ClashProxyModel()
+            lstProxyGroups.Add(new ClashProxyModel()
             {
                 Now = kv.Value.now,
                 Name = kv.Key,
@@ -229,6 +230,8 @@ public class ClashProxiesViewModel : MyReactiveObject
             });
         }
 
+        ProxyGroups.AddRange(lstProxyGroups);
+
         if (ProxyGroups is { Count: > 0 })
         {
             if (selectedName != null && ProxyGroups.Any(t => t.Name == selectedName))
diff --git a/v2rayN/ServiceLib/ViewModels/ProfilesSelectViewModel.cs b/v2rayN/ServiceLib/ViewModels/ProfilesSelectViewModel.cs
index f0d40024..b9a52936 100644
--- a/v2rayN/ServiceLib/ViewModels/ProfilesSelectViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/ProfilesSelectViewModel.cs
@@ -161,19 +161,17 @@ public class ProfilesSelectViewModel : MyReactiveObject
         await _updateView?.Invoke(EViewAction.DispatcherRefreshServersBiz, null);
     }
 
-    public async Task RefreshSubscriptions()
+    private async Task RefreshSubscriptions()
     {
+        var subItems = await AppManager.Instance.SubItems();
+        subItems.Insert(0, new SubItem { Remarks = ResUI.AllGroupServers });
+
         SubItems.Clear();
+        SubItems.AddRange(subItems);
 
-        SubItems.Add(new SubItem { Remarks = ResUI.AllGroupServers });
-
-        foreach (var item in await AppManager.Instance.SubItems())
-        {
-            SubItems.Add(item);
-        }
         SelectedSub = (_config.SubIndexId.IsNotEmpty()
-                        ? SubItems.FirstOrDefault(t => t.Id == _config.SubIndexId)
-                        : null) ?? SubItems.FirstOrDefault();
+                        ? subItems.FirstOrDefault(t => t.Id == _config.SubIndexId)
+                        : null) ?? subItems.FirstOrDefault();
     }
 
     private async Task<List<ProfileItemModel>?> GetProfileItemsEx(string subid, string filter)
diff --git a/v2rayN/ServiceLib/ViewModels/ProfilesViewModel.cs b/v2rayN/ServiceLib/ViewModels/ProfilesViewModel.cs
index 981dd250..47dfc91c 100644
--- a/v2rayN/ServiceLib/ViewModels/ProfilesViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/ProfilesViewModel.cs
@@ -397,17 +397,15 @@ public class ProfilesViewModel : MyReactiveObject
 
     private async Task RefreshSubscriptions()
     {
+        var subItems = await AppManager.Instance.SubItems();
+        subItems.Insert(0, new SubItem { Remarks = ResUI.AllGroupServers });
+
         SubItems.Clear();
+        SubItems.AddRange(subItems);
 
-        SubItems.Add(new SubItem { Remarks = ResUI.AllGroupServers });
-
-        foreach (var item in await AppManager.Instance.SubItems())
-        {
-            SubItems.Add(item);
-        }
         SelectedSub = (_config.SubIndexId.IsNotEmpty()
-                        ? SubItems.FirstOrDefault(t => t.Id == _config.SubIndexId)
-                        : null) ?? SubItems.FirstOrDefault();
+                        ? subItems.FirstOrDefault(t => t.Id == _config.SubIndexId)
+                        : null) ?? subItems.FirstOrDefault();
     }
 
     private async Task<List<ProfileItemModel>?> GetProfileItemsEx(string subid, string filter)
diff --git a/v2rayN/ServiceLib/ViewModels/RoutingRuleSettingViewModel.cs b/v2rayN/ServiceLib/ViewModels/RoutingRuleSettingViewModel.cs
index 172a907d..bdcbfe94 100644
--- a/v2rayN/ServiceLib/ViewModels/RoutingRuleSettingViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/RoutingRuleSettingViewModel.cs
@@ -95,6 +95,7 @@ public class RoutingRuleSettingViewModel : MyReactiveObject
     {
         RulesItems.Clear();
 
+        var models = new List<RulesItemModel>();
         foreach (var item in _rules)
         {
             var it = new RulesItemModel()
@@ -110,8 +111,9 @@ public class RoutingRuleSettingViewModel : MyReactiveObject
                 Enabled = item.Enabled,
                 Remarks = item.Remarks,
             };
-            RulesItems.Add(it);
+            models.Add(it);
         }
+        RulesItems.AddRange(models);
     }
 
     public async Task RuleEditAsync(bool blNew)
diff --git a/v2rayN/ServiceLib/ViewModels/RoutingSettingViewModel.cs b/v2rayN/ServiceLib/ViewModels/RoutingSettingViewModel.cs
index 2075bb1e..13703ae7 100644
--- a/v2rayN/ServiceLib/ViewModels/RoutingSettingViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/RoutingSettingViewModel.cs
@@ -83,6 +83,7 @@ public class RoutingSettingViewModel : MyReactiveObject
     public async Task RefreshRoutingItems()
     {
         RoutingItems.Clear();
+        var models = new List<RoutingItemModel>();
 
         var routings = await AppManager.Instance.RoutingItems();
         foreach (var item in routings)
@@ -98,8 +99,9 @@ public class RoutingSettingViewModel : MyReactiveObject
                 CustomRulesetPath4Singbox = item.CustomRulesetPath4Singbox,
                 Sort = item.Sort,
             };
-            RoutingItems.Add(it);
+            models.Add(it);
         }
+        RoutingItems.AddRange(models);
     }
 
     /// <summary>
diff --git a/v2rayN/ServiceLib/ViewModels/StatusBarViewModel.cs b/v2rayN/ServiceLib/ViewModels/StatusBarViewModel.cs
index b3199f12..ce0486c4 100644
--- a/v2rayN/ServiceLib/ViewModels/StatusBarViewModel.cs
+++ b/v2rayN/ServiceLib/ViewModels/StatusBarViewModel.cs
@@ -234,6 +234,8 @@ public class StatusBarViewModel : MyReactiveObject
         await RefreshRoutingsMenu();
         await InboundDisplayStatus();
         await ChangeSystemProxyAsync(_config.SystemProxyItem.SysProxyType, true);
+
+        BlRouting = true;
     }
 
     public void InitUpdateView(Func<EViewAction, object?, Task<bool>>? updateView)
@@ -312,18 +314,20 @@ public class StatusBarViewModel : MyReactiveObject
             return;
         }
 
+        var models = new List<ComboItem>();
         BlServers = true;
         foreach (var it in lstModel)
         {
             var name = it.GetSummary();
 
             var item = new ComboItem() { ID = it.IndexId, Text = name };
-            Servers.Add(item);
+            models.Add(item);
             if (_config.IndexId == it.IndexId)
             {
                 SelectedServer = item;
             }
         }
+        Servers.AddRange(models);
     }
 
     private void ServerSelectedChanged(bool c)
@@ -408,18 +412,12 @@ public class StatusBarViewModel : MyReactiveObject
 
     private async Task RefreshRoutingsMenu()
     {
-        RoutingItems.Clear();
-
-        BlRouting = true;
         var routings = await AppManager.Instance.RoutingItems();
-        foreach (var item in routings)
-        {
-            RoutingItems.Add(item);
-            if (item.IsActive)
-            {
-                SelectedRouting = item;
-            }
-        }
+
+        RoutingItems.Clear();
+        RoutingItems.AddRange(routings);
+
+        SelectedRouting = routings.FirstOrDefault(t => t.IsActive == true);
     }
 
     private async Task RoutingSelectedChangedAsync(bool c)