diff --git a/build/win32/vs10/gtk3-demo-application.vcxproj b/build/win32/vs10/gtk3-demo-application.vcxproj
index 4992d5edbe..a52ebbdaf8 100644
--- a/build/win32/vs10/gtk3-demo-application.vcxproj
+++ b/build/win32/vs10/gtk3-demo-application.vcxproj
@@ -27,7 +27,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>MultiByte</CharacterSet>
-    <WholeProgramOptimization>false</WholeProgramOptimization>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
     <PlatformToolset>v100</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@@ -38,7 +38,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>MultiByte</CharacterSet>
-    <WholeProgramOptimization>false</WholeProgramOptimization>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
     <PlatformToolset>v100</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
@@ -105,7 +105,7 @@
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
-      <OptimizeReferences>true</OptimizeReferences>
+      <OptimizeReferences>false</OptimizeReferences>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <TargetMachine>MachineX86</TargetMachine>
     </Link>
@@ -149,7 +149,7 @@
     <Link>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
-      <OptimizeReferences>true</OptimizeReferences>
+      <OptimizeReferences>false</OptimizeReferences>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <TargetMachine>MachineX64</TargetMachine>
     </Link>
diff --git a/build/win32/vs10/gtk3-demo.vcxproj b/build/win32/vs10/gtk3-demo.vcxproj
index 1f50467bcd..8c7fe477e7 100644
--- a/build/win32/vs10/gtk3-demo.vcxproj
+++ b/build/win32/vs10/gtk3-demo.vcxproj
@@ -27,7 +27,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>MultiByte</CharacterSet>
-    <WholeProgramOptimization>false</WholeProgramOptimization>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
     <PlatformToolset>v100</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@@ -38,7 +38,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>MultiByte</CharacterSet>
-    <WholeProgramOptimization>false</WholeProgramOptimization>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
     <PlatformToolset>v100</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
@@ -136,7 +136,7 @@
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
       <FunctionLevelLinking>false</FunctionLevelLinking>
-      <OptimizeReferences>true</OptimizeReferences>
+      <OptimizeReferences>false</OptimizeReferences>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <RandomizedBaseAddress>false</RandomizedBaseAddress>
       <DataExecutionPrevention>
@@ -160,7 +160,7 @@
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Console</SubSystem>
       <FunctionLevelLinking>false</FunctionLevelLinking>
-      <OptimizeReferences>true</OptimizeReferences>
+      <OptimizeReferences>false</OptimizeReferences>
       <EnableCOMDATFolding>true</EnableCOMDATFolding>
       <RandomizedBaseAddress>false</RandomizedBaseAddress>
       <DataExecutionPrevention>
diff --git a/build/win32/vs9/gtk3-demo-application.vcproj b/build/win32/vs9/gtk3-demo-application.vcproj
index 84254b8ff8..4bcddf91b9 100644
--- a/build/win32/vs9/gtk3-demo-application.vcproj
+++ b/build/win32/vs9/gtk3-demo-application.vcproj
@@ -52,7 +52,7 @@
 			InheritedPropertySheets=".\gtk-build-defines.vsprops"
 			ConfigurationType="1"
 			CharacterSet="2"
-			WholeProgramOptimization="0"
+			WholeProgramOptimization="1"
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
@@ -73,7 +73,7 @@
 				LinkIncremental="1"
 				GenerateDebugInformation="true"
 				SubSystem="1"
-				OptimizeReferences="2"
+				OptimizeReferences="1"
 				EnableCOMDATFolding="2"
 				TargetMachine="1"
 			/>
@@ -112,7 +112,7 @@
 			InheritedPropertySheets=".\gtk-build-defines.vsprops"
 			ConfigurationType="1"
 			CharacterSet="2"
-			WholeProgramOptimization="0"
+			WholeProgramOptimization="1"
 			>
 			<Tool
 				Name="VCMIDLTool"
@@ -134,7 +134,7 @@
 				LinkIncremental="1"
 				GenerateDebugInformation="true"
 				SubSystem="1"
-				OptimizeReferences="2"
+				OptimizeReferences="1"
 				EnableCOMDATFolding="2"
 				TargetMachine="17"
 			/>
diff --git a/build/win32/vs9/gtk3-demo.vcproj b/build/win32/vs9/gtk3-demo.vcproj
index 3542092ff0..b4bfd011dd 100644
--- a/build/win32/vs9/gtk3-demo.vcproj
+++ b/build/win32/vs9/gtk3-demo.vcproj
@@ -90,7 +90,7 @@
 			ConfigurationType="1"
 			InheritedPropertySheets=".\gtk-build-defines.vsprops"
 			CharacterSet="2"
-			WholeProgramOptimization="0"
+			WholeProgramOptimization="1"
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
@@ -111,7 +111,7 @@
 				LinkIncremental="1"
 				GenerateDebugInformation="true"
 				SubSystem="1"
-				OptimizeReferences="2"
+				OptimizeReferences="1"
 				EnableCOMDATFolding="2"
 				RandomizedBaseAddress="1"
 				DataExecutionPrevention="0"
@@ -123,7 +123,7 @@
 			ConfigurationType="1"
 			InheritedPropertySheets=".\gtk-build-defines.vsprops"
 			CharacterSet="2"
-			WholeProgramOptimization="0"
+			WholeProgramOptimization="1"
 			>
 			<Tool
 				Name="VCPreBuildEventTool"
@@ -144,7 +144,7 @@
 				LinkIncremental="1"
 				GenerateDebugInformation="true"
 				SubSystem="1"
-				OptimizeReferences="2"
+				OptimizeReferences="1"
 				EnableCOMDATFolding="2"
 				RandomizedBaseAddress="1"
 				DataExecutionPrevention="0"