diff --git a/Netch/Controllers/HTTPController.cs b/Netch/Controllers/HTTPController.cs
index 92839e4a..83a5c798 100644
--- a/Netch/Controllers/HTTPController.cs
+++ b/Netch/Controllers/HTTPController.cs
@@ -25,7 +25,7 @@ namespace Netch.Controllers
         /// </summary>
         /// <param name="mode">模式</param>
         /// <returns>是否启动成功</returns>
-        public bool Start(Mode mode)
+        public bool Start(in Mode mode)
         {
             RecordPrevious();
 
diff --git a/Netch/Controllers/IModeController.cs b/Netch/Controllers/IModeController.cs
index 86c325ec..5fc5e2e0 100644
--- a/Netch/Controllers/IModeController.cs
+++ b/Netch/Controllers/IModeController.cs
@@ -9,6 +9,6 @@ namespace Netch.Controllers
         /// </summary>
         /// <param name="mode">模式</param>
         /// <returns>是否成功</returns>
-        public abstract bool Start(Mode mode);
+        public abstract bool Start(in Mode mode);
     }
 }
\ No newline at end of file
diff --git a/Netch/Controllers/IServerController.cs b/Netch/Controllers/IServerController.cs
index 4ccb0c22..396dacb3 100644
--- a/Netch/Controllers/IServerController.cs
+++ b/Netch/Controllers/IServerController.cs
@@ -13,10 +13,10 @@ namespace Netch.Controllers
         /// <summary>
         ///     启动
         /// </summary>
-        /// <param name="server">服务器</param>
+        /// <param name="s">服务器</param>
         /// <param name="mode">模式</param>
         /// <returns>是否启动成功</returns>
-        public abstract bool Start(Server server, Mode mode);
+        public abstract bool Start(in Server s, in Mode mode);
     }
 
     public static class ServerControllerExtension
diff --git a/Netch/Controllers/MainController.cs b/Netch/Controllers/MainController.cs
index 72f58ac2..468e334d 100644
--- a/Netch/Controllers/MainController.cs
+++ b/Netch/Controllers/MainController.cs
@@ -120,7 +120,7 @@ namespace Netch.Controllers
             PortCheckAndShowMessageBox(controller.Socks5LocalPort(), "Socks5");
 
             Global.MainForm.StatusText(i18N.TranslateFormat("Starting {0}", controller.Name));
-            if (controller.Start(server, mode))
+            if (controller.Start(in server, mode))
             {
                 UsingPorts.Add(StatusPortInfoText.Socks5Port = controller.Socks5LocalPort());
                 StatusPortInfoText.ShareLan = controller.LocalAddress == "0.0.0.0";
diff --git a/Netch/Controllers/NFController.cs b/Netch/Controllers/NFController.cs
index de13621a..d8dcc8e7 100644
--- a/Netch/Controllers/NFController.cs
+++ b/Netch/Controllers/NFController.cs
@@ -45,7 +45,7 @@ namespace Netch.Controllers
             BinDriver = "bin\\" + fileName;
         }
 
-        public bool Start(Mode mode)
+        public bool Start(in Mode mode)
         {
             Logging.Info("内置驱动版本: " + Utils.Utils.GetFileVersion(BinDriver));
             if (Utils.Utils.GetFileVersion(SystemDriver) != Utils.Utils.GetFileVersion(BinDriver))
@@ -80,7 +80,7 @@ namespace Netch.Controllers
             return aio_init();
         }
 
-        private void SetServer(IServerController controller, PortType portType)
+        private void SetServer(in IServerController controller, in PortType portType)
         {
             if (portType == PortType.Both)
             {
diff --git a/Netch/Controllers/TUNTAPController.cs b/Netch/Controllers/TUNTAPController.cs
index 328ea9be..23027498 100644
--- a/Netch/Controllers/TUNTAPController.cs
+++ b/Netch/Controllers/TUNTAPController.cs
@@ -39,7 +39,7 @@ namespace Netch.Controllers
         public override string Name { get; protected set; } = "tun2socks";
         public override string MainFile { get; protected set; } = "tun2socks.exe";
 
-        public bool Start(Mode mode)
+        public bool Start(in Mode mode)
         {
             _savedMode = mode;
             _savedServer = MainController.ServerController.Server;
diff --git a/Netch/Models/IServerUtil.cs b/Netch/Models/IServerUtil.cs
index 0b619001..32c36a6e 100644
--- a/Netch/Models/IServerUtil.cs
+++ b/Netch/Models/IServerUtil.cs
@@ -28,7 +28,7 @@ namespace Netch.Models
         /// </summary>
         string[] UriScheme { get; }
 
-        Server ParseJObject(JObject j);
+        Server ParseJObject(in JObject j);
 
         public void Edit(Server s);
 
diff --git a/Netch/Servers/Shadowsocks/SSController.cs b/Netch/Servers/Shadowsocks/SSController.cs
index 87b073fb..ccadd84d 100644
--- a/Netch/Servers/Shadowsocks/SSController.cs
+++ b/Netch/Servers/Shadowsocks/SSController.cs
@@ -18,7 +18,7 @@ namespace Netch.Servers.Shadowsocks
         private Mode _savedMode;
         public bool DllFlag => Global.Settings.BootShadowsocksFromDLL && (_savedMode.Type == 0 || _savedMode.Type == 1 || _savedMode.Type == 2);
 
-        public bool Start(Server s, Mode mode)
+        public bool Start(in Server s, in Mode mode)
         {
             _savedMode = mode;
             Server = s;
diff --git a/Netch/Servers/Shadowsocks/SSUtil.cs b/Netch/Servers/Shadowsocks/SSUtil.cs
index 885c1751..1fb3410b 100644
--- a/Netch/Servers/Shadowsocks/SSUtil.cs
+++ b/Netch/Servers/Shadowsocks/SSUtil.cs
@@ -21,7 +21,7 @@ namespace Netch.Servers.Shadowsocks
         public string ShortName { get; } = "SS";
         public string[] UriScheme { get; } = {"ss", "ssd"};
 
-        public Server ParseJObject(JObject j)
+        public Server ParseJObject(in JObject j)
         {
             return j.ToObject<Shadowsocks>();
         }
diff --git a/Netch/Servers/ShadowsocksR/SSRController.cs b/Netch/Servers/ShadowsocksR/SSRController.cs
index 97c978d2..4437ab70 100644
--- a/Netch/Servers/ShadowsocksR/SSRController.cs
+++ b/Netch/Servers/ShadowsocksR/SSRController.cs
@@ -15,7 +15,7 @@ namespace Netch.Servers.ShadowsocksR
         public ushort? Socks5LocalPort { get; set; }
         public string LocalAddress { get; set; }
 
-        public bool Start(Server s, Mode mode)
+        public bool Start(in Server s, in Mode mode)
         {
             Server = s;
             var server = (ShadowsocksR) s;
diff --git a/Netch/Servers/ShadowsocksR/SSRUtil.cs b/Netch/Servers/ShadowsocksR/SSRUtil.cs
index ad8ff9bf..d1b0f609 100644
--- a/Netch/Servers/ShadowsocksR/SSRUtil.cs
+++ b/Netch/Servers/ShadowsocksR/SSRUtil.cs
@@ -17,7 +17,7 @@ namespace Netch.Servers.ShadowsocksR
         public string ShortName { get; } = "SR";
         public string[] UriScheme { get; } = {"ssr"};
 
-        public Server ParseJObject(JObject j)
+        public Server ParseJObject(in JObject j)
         {
             return j.ToObject<ShadowsocksR>();
         }
diff --git a/Netch/Servers/Socks5/S5Controller.cs b/Netch/Servers/Socks5/S5Controller.cs
index 4ffb8a3f..7c7d2142 100644
--- a/Netch/Servers/Socks5/S5Controller.cs
+++ b/Netch/Servers/Socks5/S5Controller.cs
@@ -10,7 +10,7 @@ namespace Netch.Servers.Socks5
         public override string Name { get; protected set; } = "Socks5";
         public override string MainFile { get; protected set; } = "v2ray.exe";
 
-        public bool Start(Server s, Mode mode)
+        public bool Start(in Server s, in Mode mode)
         {
             Server = s;
             var server = (Socks5) s;
diff --git a/Netch/Servers/Socks5/S5Util.cs b/Netch/Servers/Socks5/S5Util.cs
index 3983de7e..96f7b61b 100644
--- a/Netch/Servers/Socks5/S5Util.cs
+++ b/Netch/Servers/Socks5/S5Util.cs
@@ -15,7 +15,7 @@ namespace Netch.Servers.Socks5
         public string ShortName { get; } = "S5";
         public string[] UriScheme { get; } = { };
 
-        public Server ParseJObject(JObject j)
+        public Server ParseJObject(in JObject j)
         {
             return j.ToObject<Socks5>();
         }
diff --git a/Netch/Servers/Trojan/TrojanController.cs b/Netch/Servers/Trojan/TrojanController.cs
index 179063f8..6a11656b 100644
--- a/Netch/Servers/Trojan/TrojanController.cs
+++ b/Netch/Servers/Trojan/TrojanController.cs
@@ -23,7 +23,7 @@ namespace Netch.Servers.Trojan
         public string LocalAddress { get; set; }
 
 
-        public bool Start(Server s, Mode mode)
+        public bool Start(in Server s, in Mode mode)
         {
             Server = s;
             var server = (Trojan) s;
diff --git a/Netch/Servers/Trojan/TrojanUtil.cs b/Netch/Servers/Trojan/TrojanUtil.cs
index 9917176d..b750c008 100644
--- a/Netch/Servers/Trojan/TrojanUtil.cs
+++ b/Netch/Servers/Trojan/TrojanUtil.cs
@@ -17,7 +17,7 @@ namespace Netch.Servers.Trojan
         public string ShortName { get; } = "TR";
         public string[] UriScheme { get; } = {"trojan"};
 
-        public Server ParseJObject(JObject j)
+        public Server ParseJObject(in JObject j)
         {
             return j.ToObject<Trojan>();
         }
diff --git a/Netch/Servers/VLESS/VLESSController.cs b/Netch/Servers/VLESS/VLESSController.cs
index c35a1c11..d9031b8a 100644
--- a/Netch/Servers/VLESS/VLESSController.cs
+++ b/Netch/Servers/VLESS/VLESSController.cs
@@ -15,7 +15,7 @@ namespace Netch.Servers.VLESS
 
         public string LocalAddress { get; set; }
 
-        public bool Start(Server s, Mode mode)
+        public  bool Start(in Server s,in Mode mode)
         {
             Server = s;
             File.WriteAllText("data\\last.json", V2rayConfigUtils.GenerateClientConfig(s, mode));
diff --git a/Netch/Servers/VLESS/VLESSUtil.cs b/Netch/Servers/VLESS/VLESSUtil.cs
index a7050609..813838bf 100644
--- a/Netch/Servers/VLESS/VLESSUtil.cs
+++ b/Netch/Servers/VLESS/VLESSUtil.cs
@@ -13,7 +13,7 @@ namespace Netch.Servers.VLESS
         public string ShortName { get; } = "VL";
         public string[] UriScheme { get; } = { };
 
-        public Server ParseJObject(JObject j)
+        public Server ParseJObject(in JObject j)
         {
             return j.ToObject<VLESS>();
         }
diff --git a/Netch/Servers/VMess/VMessController.cs b/Netch/Servers/VMess/VMessController.cs
index de4038da..0b96e463 100644
--- a/Netch/Servers/VMess/VMessController.cs
+++ b/Netch/Servers/VMess/VMessController.cs
@@ -20,7 +20,7 @@ namespace Netch.Servers.VMess
         public string LocalAddress { get; set; }
 
 
-        public bool Start(Server s, Mode mode)
+        public  bool Start(in Server s,in Mode mode)
         {
             Server = s;
             File.WriteAllText("data\\last.json", V2rayConfigUtils.GenerateClientConfig(s, mode));
diff --git a/Netch/Servers/VMess/VMessUtil.cs b/Netch/Servers/VMess/VMessUtil.cs
index 649b826d..b36b9a00 100644
--- a/Netch/Servers/VMess/VMessUtil.cs
+++ b/Netch/Servers/VMess/VMessUtil.cs
@@ -18,7 +18,7 @@ namespace Netch.Servers.VMess
         public string ShortName { get; } = "V2";
         public string[] UriScheme { get; } = {"vmess"};
 
-        public Server ParseJObject(JObject j)
+        public Server ParseJObject(in JObject j)
         {
             return j.ToObject<VMess>();
         }
diff --git a/Netch/Utils/Bandwidth.cs b/Netch/Utils/Bandwidth.cs
index efcdae3a..c6f5f2be 100644
--- a/Netch/Utils/Bandwidth.cs
+++ b/Netch/Utils/Bandwidth.cs
@@ -53,7 +53,7 @@ namespace Netch.Utils
         /// <summary>
         /// 根据程序名统计流量
         /// </summary>
-        public static void NetTraffic(Server server, Mode mode)
+        public static void NetTraffic(in Server server, in Mode mode)
         {
             if (!Global.Flags.IsWindows10Upper)
                 return;
diff --git a/Netch/Utils/ShareLink.cs b/Netch/Utils/ShareLink.cs
index 45e9d9c0..730401ea 100644
--- a/Netch/Utils/ShareLink.cs
+++ b/Netch/Utils/ShareLink.cs
@@ -149,7 +149,7 @@ namespace Netch.Utils
             return list;
         }
 
-        private static IEnumerable<Server> ParseUri(string text)
+        private static IEnumerable<Server> ParseUri(in string text)
         {
             var list = new List<Server>();
 
diff --git a/Netch/Utils/Utils.cs b/Netch/Utils/Utils.cs
index 79a20942..0e4ec4da 100644
--- a/Netch/Utils/Utils.cs
+++ b/Netch/Utils/Utils.cs
@@ -197,7 +197,7 @@ namespace Netch.Utils
             }
         }
 
-        public static void ComponentIterator(Component component, Action<Component> func)
+        public static void ComponentIterator(in Component component, in Action<Component> func)
         {
             func.Invoke(component);
             switch (component)
diff --git a/Netch/Utils/i18N.cs b/Netch/Utils/i18N.cs
index 03a25be9..588fefe3 100644
--- a/Netch/Utils/i18N.cs
+++ b/Netch/Utils/i18N.cs
@@ -106,7 +106,7 @@ namespace Netch.Utils
             return translateFile;
         }
 
-        public static void TranslateForm(Control c)
+        public static void TranslateForm(in Control c)
         {
             Utils.ComponentIterator(c, component =>
             {