diff --git a/Source/Core/DolphinQt/CMakeLists.txt b/Source/Core/DolphinQt/CMakeLists.txt
index 44a59d5313..79e5cce207 100644
--- a/Source/Core/DolphinQt/CMakeLists.txt
+++ b/Source/Core/DolphinQt/CMakeLists.txt
@@ -462,6 +462,7 @@ if(WIN32)
 
   # Copy Sys dir
   add_custom_command(TARGET dolphin-emu POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E remove_directory "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/Sys"
     COMMAND ${CMAKE_COMMAND} -E copy_directory "${CMAKE_SOURCE_DIR}/Data/Sys" "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/Sys"
   )
 
diff --git a/Source/Core/DolphinQt/DolphinQt.vcxproj b/Source/Core/DolphinQt/DolphinQt.vcxproj
index 9dd72e3622..7ee8cac6a5 100644
--- a/Source/Core/DolphinQt/DolphinQt.vcxproj
+++ b/Source/Core/DolphinQt/DolphinQt.vcxproj
@@ -490,8 +490,9 @@
   </ItemGroup>
   <Target Name="AfterBuild" Inputs="@(AllInputFiles)" Outputs="@(AllInputFiles -> '$(BinaryOutputDir)%(RecursiveDir)%(Filename)%(Extension)')">
     <Message Text="Copying Data directory..." Importance="High" />
-    <Copy SourceFiles="@(DataSysFiles)" DestinationFolder="$(BinaryOutputDir)%(RecursiveDir)" Condition="!Exists('$(BinaryOutputDir)%(RecursiveDir)%(Filename)%(DataSysFiles.Extension)') OR $([System.DateTime]::Parse('%(ModifiedTime)').Ticks) &gt; $([System.IO.File]::GetLastWriteTime('$(BinaryOutputDir)%(RecursiveDir)%(Filename)%(DataSysFiles.Extension)').Ticks)" />
-    <Copy SourceFiles="@(DataTxtFiles)" DestinationFolder="$(BinaryOutputDir)" Condition="!Exists('$(BinaryOutputDir)%(Filename)%(DataTxtFiles.Extension)') OR $([System.DateTime]::Parse('%(ModifiedTime)').Ticks) &gt; $([System.IO.File]::GetLastWriteTime('$(BinaryOutputDir)%(RecursiveDir)%(Filename)%(DataTxtFiles.Extension)').Ticks)" />
+    <RemoveDir Directories="$(BinaryOutputDir)Sys" />
+    <Copy SourceFiles="@(DataSysFiles)" DestinationFolder="$(BinaryOutputDir)%(RecursiveDir)" SkipUnchangedFiles="True" />
+    <Copy SourceFiles="@(DataTxtFiles)" DestinationFolder="$(BinaryOutputDir)" SkipUnchangedFiles="True" />
     <Message Text="Copy: @(BinaryFiles) -&gt; $(BinaryOutputDir)" Importance="High" />
     <Copy SourceFiles="@(BinaryFiles)" DestinationFolder="$(BinaryOutputDir)" />
   </Target>
diff --git a/Source/UnitTests/CMakeLists.txt b/Source/UnitTests/CMakeLists.txt
index 96f26a8793..659d9e5b28 100644
--- a/Source/UnitTests/CMakeLists.txt
+++ b/Source/UnitTests/CMakeLists.txt
@@ -9,6 +9,7 @@ set_target_properties(tests PROPERTIES FOLDER Tests)
 target_link_libraries(tests PRIVATE fmt::fmt gtest::gtest core uicommon)
 add_test(NAME tests COMMAND tests)
 add_custom_command(TARGET tests POST_BUILD
+  COMMAND ${CMAKE_COMMAND} -E remove_directory "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/Sys"
   COMMAND ${CMAKE_COMMAND} -E copy_directory "${CMAKE_SOURCE_DIR}/Data/Sys" "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/Sys"
 )
 add_dependencies(unittests tests)
diff --git a/Source/UnitTests/UnitTests.vcxproj b/Source/UnitTests/UnitTests.vcxproj
index 229e5b576f..48b85bfdf3 100644
--- a/Source/UnitTests/UnitTests.vcxproj
+++ b/Source/UnitTests/UnitTests.vcxproj
@@ -24,9 +24,6 @@
     <Link>
       <SubSystem>Console</SubSystem>
     </Link>
-    <PostBuildEvent>
-      <Command>xcopy /i /e /s /y /f "$(ProjectDir)\..\..\Data\Sys\" "$(TargetDir)Sys"</Command>
-    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClInclude Include="Core\DSP\DSPTestBinary.h" />
@@ -109,7 +106,15 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-  <Target Name="ExecUnitTests" AfterTargets="AfterBuild;CopyDeps" Condition="'$(RunUnitTests)'=='true'">
+  <ItemGroup>
+    <DataSysFiles Include="$(DolphinRootDir)Data\**\Sys\**\*.*" />
+  </ItemGroup>
+  <Target Name="AfterBuild" Inputs="@(DataSysFiles)" Outputs="@(DataSysFiles -> '$(TargetDir)%(RecursiveDir)%(Filename)%(Extension)')">
+    <Message Text="Copying Data directory..." Importance="High" />
+    <RemoveDir Directories="$(TargetDir)Sys" />
+    <Copy SourceFiles="@(DataSysFiles)" DestinationFolder="$(TargetDir)%(RecursiveDir)" SkipUnchangedFiles="True" />
+  </Target>
+  <Target Name="ExecUnitTests" AfterTargets="AfterBuild" Condition="'$(RunUnitTests)'=='true'">
     <!--This is only executed via msbuild, VS test runner automatically does this-->
     <Exec Command="$(TargetPath)" />
   </Target>