diff --git a/plugins/checksum/checksum.vcxproj b/plugins/checksum/checksum.vcxproj
index 4090675c..ce75d68b 100644
--- a/plugins/checksum/checksum.vcxproj
+++ b/plugins/checksum/checksum.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;CHECKSUM_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -80,7 +79,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;CHECKSUM_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/dns/dns.vcxproj b/plugins/dns/dns.vcxproj
index 39e47f67..f34c7bc3 100644
--- a/plugins/dns/dns.vcxproj
+++ b/plugins/dns/dns.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;DNS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -80,7 +79,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;DNS_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/doat/doat.vcxproj b/plugins/doat/doat.vcxproj
index bb44030d..32ac7055 100644
--- a/plugins/doat/doat.vcxproj
+++ b/plugins/doat/doat.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;DOAT_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -78,7 +77,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;DOAT_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/exec/exec.vcxproj b/plugins/exec/exec.vcxproj
index f1710119..e789767f 100644
--- a/plugins/exec/exec.vcxproj
+++ b/plugins/exec/exec.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;EXEC_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -78,7 +77,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;EXEC_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/fishlim/fishlim.vcxproj b/plugins/fishlim/fishlim.vcxproj
index 3743057c..d21c21ad 100644
--- a/plugins/fishlim/fishlim.vcxproj
+++ b/plugins/fishlim/fishlim.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;FISHLIM_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -80,7 +79,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;FISHLIM_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/hextray/hextray.vcxproj b/plugins/hextray/hextray.vcxproj
index 9cac1368..3c48e9d0 100644
--- a/plugins/hextray/hextray.vcxproj
+++ b/plugins/hextray/hextray.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;XTRAY_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -78,7 +77,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;XTRAY_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/mpcinfo/mpcinfo.vcxproj b/plugins/mpcinfo/mpcinfo.vcxproj
index a63962a9..756fddf2 100644
--- a/plugins/mpcinfo/mpcinfo.vcxproj
+++ b/plugins/mpcinfo/mpcinfo.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;MPCINFO_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -78,7 +77,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;MPCINFO_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/perl/perl.vcxproj b/plugins/perl/perl.vcxproj
index af173966..afaaa08f 100644
--- a/plugins/perl/perl.vcxproj
+++ b/plugins/perl/perl.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;PERL518_EXPORTS;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -89,7 +88,6 @@ move xchat.pm.h "$(IntDir)"</Command>
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;PERL518_EXPORTS;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/python/python2.vcxproj b/plugins/python/python2.vcxproj
index 1f524134..6730f45e 100644
--- a/plugins/python/python2.vcxproj
+++ b/plugins/python/python2.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;PYTHON_EXPORTS;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -80,7 +79,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;PYTHON_EXPORTS;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/python/python3.vcxproj b/plugins/python/python3.vcxproj
index ddf56132..28ffc80c 100644
--- a/plugins/python/python3.vcxproj
+++ b/plugins/python/python3.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;PYTHON_EXPORTS;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -80,7 +79,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;PYTHON_EXPORTS;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/sysinfo/sysinfo.vcxproj b/plugins/sysinfo/sysinfo.vcxproj
index 0446e723..88c090cc 100644
--- a/plugins/sysinfo/sysinfo.vcxproj
+++ b/plugins/sysinfo/sysinfo.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;SYSINFO_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -81,7 +80,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;SYSINFO_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/upd/upd.vcxproj b/plugins/upd/upd.vcxproj
index 1b3009dc..a06085b2 100644
--- a/plugins/upd/upd.vcxproj
+++ b/plugins/upd/upd.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;UPD_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -80,7 +79,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;UPD_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/plugins/winamp/winamp.vcxproj b/plugins/winamp/winamp.vcxproj
index 667ec598..e140f55f 100644
--- a/plugins/winamp/winamp.vcxproj
+++ b/plugins/winamp/winamp.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;WINAMP_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -78,7 +77,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;_USRDLL;WINAMP_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/src/common/common.vcxproj b/src/common/common.vcxproj
index c71d6ced..5568409e 100644
--- a/src/common/common.vcxproj
+++ b/src/common/common.vcxproj
@@ -119,7 +119,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_LIB;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -137,7 +136,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_LIB;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/src/common/make-te.vcxproj b/src/common/make-te.vcxproj
index 07bb5ca4..b9f0f11f 100644
--- a/src/common/make-te.vcxproj
+++ b/src/common/make-te.vcxproj
@@ -57,7 +57,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -77,7 +76,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/src/fe-gtk/fe-gtk.vcxproj b/src/fe-gtk/fe-gtk.vcxproj
index 0c149928..f8c6377a 100644
--- a/src/fe-gtk/fe-gtk.vcxproj
+++ b/src/fe-gtk/fe-gtk.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -81,7 +80,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_WINDOWS;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/src/fe-text/fe-text.vcxproj b/src/fe-text/fe-text.vcxproj
index 1c42c967..2a7c3742 100644
--- a/src/fe-text/fe-text.vcxproj
+++ b/src/fe-text/fe-text.vcxproj
@@ -59,7 +59,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -79,7 +78,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_CONSOLE;$(OwnFlags);%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/src/pixmaps/pixmaps.vcxproj b/src/pixmaps/pixmaps.vcxproj
index dbb18520..a86a7e13 100644
--- a/src/pixmaps/pixmaps.vcxproj
+++ b/src/pixmaps/pixmaps.vcxproj
@@ -57,7 +57,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -76,7 +75,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/src/version/version.vcxproj b/src/version/version.vcxproj
index ca429b08..f1520f73 100644
--- a/src/version/version.vcxproj
+++ b/src/version/version.vcxproj
@@ -57,7 +57,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -77,7 +76,6 @@
     <ClCompile>
       <PrecompiledHeader>
       </PrecompiledHeader>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
       <PreprocessorDefinitions>WIN32;_WIN64;_AMD64_;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
diff --git a/win32/copy/copy.vcxproj b/win32/copy/copy.vcxproj
index 3146e6be..1586d200 100644
--- a/win32/copy/copy.vcxproj
+++ b/win32/copy/copy.vcxproj
@@ -52,7 +52,6 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
     </ClCompile>
@@ -67,7 +66,6 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
     </ClCompile>
diff --git a/win32/hexchat.props b/win32/hexchat.props
index 453240d8..25fdb14a 100644
--- a/win32/hexchat.props
+++ b/win32/hexchat.props
@@ -100,6 +100,11 @@ xcopy /q /s /i "$(DepsRoot)\share\locale" "$(HexChatRel)\share\locale"
 		<ClCompile>
 			<WarningLevel>Level3</WarningLevel>
 			<DisableSpecificWarnings>4996</DisableSpecificWarnings>
+			<!-- UNCOMMENT ONLY ONE -->
+			<!--Optimization>Disabled</Optimization-->
+			<Optimization>MaxSpeed</Optimization>
+			<!--Optimization>MinSpace</Optimization-->
+			<!--Optimization>Full</Optimization-->
 		</ClCompile>
 	</ItemDefinitionGroup>
 
diff --git a/win32/installer/installer.vcxproj b/win32/installer/installer.vcxproj
index faa13c06..87142c2c 100644
--- a/win32/installer/installer.vcxproj
+++ b/win32/installer/installer.vcxproj
@@ -52,7 +52,6 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
     </ClCompile>
@@ -76,7 +75,6 @@ type hexchat-x86.skel.iss &gt;&gt; "$(OutDir)\hexchat-x86.iss"
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
     </ClCompile>
diff --git a/win32/nls/nls.vcxproj b/win32/nls/nls.vcxproj
index c1da078a..35ca3e9d 100644
--- a/win32/nls/nls.vcxproj
+++ b/win32/nls/nls.vcxproj
@@ -52,7 +52,6 @@
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <ClCompile>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
     </ClCompile>
@@ -73,7 +72,6 @@ mkdir "$(OutDir)\locale\%%~nA\LC_MESSAGES"
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
-      <Optimization>MaxSpeed</Optimization>
       <FunctionLevelLinking>true</FunctionLevelLinking>
       <IntrinsicFunctions>true</IntrinsicFunctions>
     </ClCompile>