diff --git a/MMOTestServer/MMOserver/Program.cs b/MMOTestServer/MMOserver/Program.cs
index c79dc6e..8590bd5 100644
--- a/MMOTestServer/MMOserver/Program.cs
+++ b/MMOTestServer/MMOserver/Program.cs
@@ -7,7 +7,7 @@ namespace MMOserver;
 
 class Program
 {
-    private static void Main()
+    private static async Task Main()
     {
         // .MinimumLevel.Warning() // Warning 이상만 출력 배포시
 
@@ -43,17 +43,24 @@ class Program
         };
 
         // 게임 서버 스레드 생성
-        Thread serverThread = new Thread(() =>
-        {
-            gameServer.Init();
-            gameServer.Run();
-        });
+        // Thread serverThread = new Thread(() =>
+        // {
+        //     gameServer.Init();
+        //     gameServer.Run();
+        // });
 
         // 게임 서버 스레드 시작
-        serverThread.Start();
+        // serverThread.Start();
 
         // Run()이 끝날 때까지 대기
-        serverThread.Join();
+        // serverThread.Join();
+
+        // 비동기 변경
+        await Task.Run(async () =>
+        {
+            gameServer.Init();
+            await gameServer.Run();
+        });
 
         // Log 종료
         Log.CloseAndFlush();
diff --git a/MMOTestServer/ServerLib/Service/ServerBase.cs b/MMOTestServer/ServerLib/Service/ServerBase.cs
index bedb4e6..41ed037 100644
--- a/MMOTestServer/ServerLib/Service/ServerBase.cs
+++ b/MMOTestServer/ServerLib/Service/ServerBase.cs
@@ -61,7 +61,7 @@ public abstract class ServerBase : INetEventListener
         isListening = true;
     }
 
-    public virtual void Run()
+    public async Task Run()
     {
         netManager.Start(Port);
         Log.Information("[Server] 시작 Port={Port}", Port);
@@ -69,7 +69,7 @@ public abstract class ServerBase : INetEventListener
         while (isListening)
         {
             netManager.PollEvents();
-            Thread.Sleep(15);
+            await Task.Delay(1);
         }
         netManager.Stop();
         Log.Information("[Server] 종료 Port={Port}", Port);
@@ -193,7 +193,8 @@ public abstract class ServerBase : INetEventListener
         short code = reader.GetShort();
         short bodyLength = reader.GetShort();
         Log.Debug("[Echo] : addr={Addr}, str={Str}", peer.Address, reader.GetString());
-        SendTo(peer, payload);
+        // Echo메시지는 순서보장 안함 HOL Blocking 제거
+        SendTo(peer, payload, DeliveryMethod.ReliableUnordered);
     }
 
     // ─── Auth 처리 (내부) ────────────────────────────────────────────────