diff --git a/Include/Aurora/Runtime.hpp b/Include/Aurora/Runtime.hpp
index 45c7e916..46c003ef 100644
--- a/Include/Aurora/Runtime.hpp
+++ b/Include/Aurora/Runtime.hpp
@@ -422,6 +422,11 @@ namespace Aurora
         bool bEnablePreload { true };
     };
 
+    struct IOConfig
+    {
+        AuUInt32 uProtocolStackDefaultBufferSize { 64 * 1024 };
+    };
+
     struct RuntimeStartInfo
     {
         ConsoleConfig console;
@@ -433,6 +438,7 @@ namespace Aurora
         AuAlignTo<32, ThreadingConfig> threadingConfig;
         AuAlignTo<32, LinuxConfig> linuxConfig;
         AuAlignTo<32, ProcessConfig> processConfig;
+        AuAlignTo<32, IOConfig> ioConfig;
         AuAlignTo<32, DummyConfig> padding;
     };
 
diff --git a/Source/IO/Protocol/AuProtocolStack.cpp b/Source/IO/Protocol/AuProtocolStack.cpp
index e0af35d6..c60d8e82 100644
--- a/Source/IO/Protocol/AuProtocolStack.cpp
+++ b/Source/IO/Protocol/AuProtocolStack.cpp
@@ -103,7 +103,7 @@ namespace Aurora::IO::Protocol
 
         if (!uOutputBufferSize)
         {
-            uOutputBufferSize = 64 * 1024;
+            uOutputBufferSize = gRuntimeConfig.ioConfig.uProtocolStackDefaultBufferSize;
         }
 
         auto pNew = AuMakeShared<ProtocolPiece>();
@@ -242,7 +242,7 @@ namespace Aurora::IO::Protocol
 
         if (!uOutputBufferSize)
         {
-            uOutputBufferSize = 64 * 1024;
+            uOutputBufferSize = gRuntimeConfig.ioConfig.uProtocolStackDefaultBufferSize;
         }
 
         auto pNew = AuMakeShared<ProtocolPiece>();