diff --git a/EgtNumKernel.vcxproj b/EgtNumKernel.vcxproj
index 0505520..6d7eff5 100644
--- a/EgtNumKernel.vcxproj
+++ b/EgtNumKernel.vcxproj
@@ -47,7 +47,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <WholeProgramOptimization>false</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
     <PlatformToolset>ClangCL</PlatformToolset>
   </PropertyGroup>
@@ -183,7 +183,7 @@ copy $(TargetPath) \EgtProg\Dll32</Command>
       <FavorSizeOrSpeed>Speed</FavorSizeOrSpeed>
       <OmitFramePointers>true</OmitFramePointers>
       <EnableEnhancedInstructionSet>AdvancedVectorExtensions2</EnableEnhancedInstructionSet>
-      <EnableFiberSafeOptimizations>true</EnableFiberSafeOptimizations>
+      <EnableFiberSafeOptimizations>false</EnableFiberSafeOptimizations>
       <EnableParallelCodeGeneration>true</EnableParallelCodeGeneration>
       <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>