diff --git a/.github/workflows/ccache.yml b/.github/workflows/ccache.yml
index 0a044a6aa5..c3d5c84f37 100644
--- a/.github/workflows/ccache.yml
+++ b/.github/workflows/ccache.yml
@@ -171,14 +171,123 @@ jobs:
         name: ttk-ccache-macOS
         path: /Users/runner/work/ttk/ttk-ccache.tar.gz
 
+  # ------- #
+  # Windows #
+  # ------- #
+  ccache-windows:
+    runs-on: windows-latest
+    env:
+      CONDA_ROOT: C:\Miniconda
+    steps:
+    - uses: actions/checkout@v2
+      name: Checkout TTK source code
+
+    - uses: s-weigand/setup-conda@v1
+
+    - name: Install dependencies with conda
+      shell: bash
+      run: |
+        conda install -c conda-forge boost glew eigen spectralib zfp \
+          scikit-learn packaging openmp graphviz ninja sccache
+        # add sccache to PATH
+        echo "$CONDA_ROOT/bin" >> $GITHUB_PATH
+
+    - name: Remove hosted Python
+      shell: bash
+      run: |
+        rm -rf C:/hostedtoolcache/windows/Python
+
+    - name: Fetch TTK-ParaView headless Windows installer
+      run: |
+        Invoke-WebRequest `
+        -OutFile ttk-paraview-headless.exe `
+        -Uri https://github.com/${{ env.PV_REPO }}/releases/download/${{ env.PV_TAG }}/ttk-paraview-headless.exe
+
+    - name: Install ParaView
+      shell: cmd
+      run: |
+        ttk-paraview-headless.exe /S
+
+    - name: Create & configure TTK build directory
+      shell: cmd
+      run: |
+        set CMAKE_PREFIX_PATH=%CONDA_ROOT%\Library\lib\cmake;%CONDA_ROOT%\Library\share\eigen3\cmake;%CONDA_ROOT%\Library\cmake;%ProgramFiles%\TTK-ParaView\lib\cmake
+        set CC=clang-cl.exe
+        set CXX=clang-cl.exe
+        call "%ProgramFiles%\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
+        sccache --stop-server
+        sccache --start-server
+        mkdir build
+        cd build
+        cmake ^
+          -DCMAKE_BUILD_TYPE=Release ^
+          -DCMAKE_POLICY_DEFAULT_CMP0092=NEW ^
+          -DBUILD_SHARED_LIBS:BOOL=TRUE ^
+          -DCMAKE_C_COMPILER_LAUNCHER=sccache ^
+          -DCMAKE_CXX_COMPILER_LAUNCHER=sccache ^
+          -DPython3_ROOT_DIR="%CONDA_ROOT%" ^
+          -DGraphviz_INCLUDE_DIR="%CONDA_ROOT%\Library\include\graphviz" ^
+          -DGraphviz_CDT_LIBRARY="%CONDA_ROOT%\Library\lib\cdt.lib" ^
+          -DGraphviz_GVC_LIBRARY="%CONDA_ROOT%\Library\lib\gvc.lib" ^
+          -DGraphviz_CGRAPH_LIBRARY="%CONDA_ROOT%\Library\lib\cgraph.lib" ^
+          -DGraphviz_PATHPLAN_LIBRARY="%CONDA_ROOT%\Library\lib\pathplan.lib" ^
+          -DTTK_BUILD_PARAVIEW_PLUGINS=TRUE ^
+          -DTTK_BUILD_VTK_WRAPPERS=TRUE ^
+          -DTTK_BUILD_STANDALONE_APPS=TRUE ^
+          -DTTK_ENABLE_KAMIKAZE=TRUE ^
+          -DTTK_ENABLE_OPENMP=TRUE ^
+          -DTTK_ENABLE_CPU_OPTIMIZATION=FALSE ^
+          -DTTK_ENABLE_SHARED_BASE_LIBRARIES=TRUE ^
+          -DTTK_IMPLICIT_PRECONDITIONS_THRESHOLD=64*64*64 ^
+          -GNinja ^
+          ..
+
+    - name: Fix clang-cl OpenMP flags in build.ninja
+      shell: bash
+      run: |
+        sed -i 's/-Xclang -fopenmp/-openmp/' build/build.ninja
+
+    - name: Build & install TTK
+      shell: cmd
+      run: |
+        cd build
+        call "%ProgramFiles%\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
+        cmake --build . --config Release --parallel --target install
+
+    - name: Archive cache
+      shell: bash
+      run: |
+        cd /c/Users/runneradmin/AppData/Local/Mozilla/sccache
+        tar czf ttk-sccache.tar.gz cache
+
+    - name: Upload sccache archive
+      uses: actions/upload-artifact@v2
+      with:
+        name: ttk-sccache-windows
+        path: C:\Users\runneradmin\AppData\Local\Mozilla\sccache\ttk-sccache.tar.gz
+
+
   # --------------------- #
   # Upload release assets #
   # --------------------- #
   create-release:
     runs-on: ubuntu-latest
-    needs: [ccache-ubuntu, ccache-macos]
+    needs: [ccache-ubuntu, ccache-macos, ccache-windows]
     steps:
 
+    - name: Delete previous release
+      uses: actions/github-script@v6
+      continue-on-error: true
+      with:
+        script: |
+          const { owner, repo } = context.repo
+          const { data: { id } } = await github.rest.repos.getReleaseByTag({
+            owner,
+            repo,
+            tag: "ccache"
+          })
+          await github.rest.repos.deleteRelease({ owner, repo, release_id: id })
+
     - name: Create Release
       id: create_release
       uses: actions/create-release@v1
@@ -224,3 +333,11 @@ jobs:
         tag: ${{ github.ref }}
         file: ttk-ccache-macOS/ttk-ccache.tar.gz
         asset_name: ttk-ccache-macOS.tar.gz
+
+    - name: Upload sccache Windows archive
+      uses: svenstaro/upload-release-action@v2
+      with:
+        repo_token: ${{ secrets.GITHUB_TOKEN }}
+        tag: ${{ github.ref }}
+        file: ttk-sccache-windows/ttk-sccache.tar.gz
+        asset_name: ttk-sccache-windows.tar.gz
diff --git a/.github/workflows/package.yml b/.github/workflows/package.yml
index c586fa8266..fdccc17161 100644
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@@ -320,7 +320,7 @@ jobs:
       shell: bash
       run: |
         conda install -c conda-forge "qt>=5.12" boost eigen spectralib zfp \
-          scikit-learn packaging openmp "graphviz>=2.50"
+          scikit-learn packaging openmp graphviz
 
     - name: Remove hosted Python
       shell: bash
@@ -410,7 +410,7 @@ jobs:
       shell: bash
       run: |
         conda install -c conda-forge "qt>=5.12" boost eigen spectralib zfp \
-          scikit-learn packaging openmp "graphviz>=2.50"
+          scikit-learn packaging openmp graphviz
 
     - name: Remove hosted Python
       shell: bash
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2b062f359b..8ff913c276 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -328,13 +328,36 @@ jobs:
       shell: bash
       run: |
         conda install -c conda-forge boost glew eigen spectralib zfp \
-          scikit-learn packaging openmp "graphviz>=2.50"
+          scikit-learn packaging openmp graphviz ninja sccache
+        # add sccache to PATH
+        echo "$CONDA_ROOT/bin" >> $GITHUB_PATH
+        # add TTK & ParaView install folders to PATH
+        echo "$PV_DIR/bin" >> $GITHUB_PATH
+        echo "$TTK_DIR/bin" >> $GITHUB_PATH
 
     - name: Remove hosted Python
       shell: bash
       run: |
         rm -rf C:/hostedtoolcache/windows/Python
 
+    - uses: dsaltares/fetch-gh-release-asset@master
+      continue-on-error: true
+      name: Fetch archived ccache
+      with:
+        repo: "topology-tool-kit/ttk"
+        version: "tags/ccache"
+        file: "ttk-sccache-windows.tar.gz"
+        target: "ttk-sccache.tar.gz"
+        token: ${{ secrets.GITHUB_TOKEN }}
+
+    - name: Decompress ccache archive
+      continue-on-error: true
+      shell: bash
+      run: |
+        tar xzf ttk-sccache.tar.gz
+        mkdir -p /c/Users/runneradmin/AppData/Local/Mozilla/sccache
+        mv cache /c/Users/runneradmin/AppData/Local/Mozilla/sccache
+
     - name: Fetch TTK-ParaView headless Windows installer
       run: |
         Invoke-WebRequest `
@@ -350,11 +373,19 @@ jobs:
       shell: cmd
       run: |
         set CMAKE_PREFIX_PATH=%CONDA_ROOT%\Library\lib\cmake;%CONDA_ROOT%\Library\share\eigen3\cmake;%CONDA_ROOT%\Library\cmake;%ProgramFiles%\TTK-ParaView\lib\cmake
+        set CC=clang-cl.exe
+        set CXX=clang-cl.exe
+        call "%ProgramFiles%\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
+        sccache --stop-server
+        sccache --start-server
         mkdir build
         cd build
         cmake ^
+          -DCMAKE_BUILD_TYPE=Release ^
           -DCMAKE_POLICY_DEFAULT_CMP0092=NEW ^
           -DBUILD_SHARED_LIBS:BOOL=TRUE ^
+          -DCMAKE_C_COMPILER_LAUNCHER=sccache ^
+          -DCMAKE_CXX_COMPILER_LAUNCHER=sccache ^
           -DPython3_ROOT_DIR="%CONDA_ROOT%" ^
           -DGraphviz_INCLUDE_DIR="%CONDA_ROOT%\Library\include\graphviz" ^
           -DGraphviz_CDT_LIBRARY="%CONDA_ROOT%\Library\lib\cdt.lib" ^
@@ -369,40 +400,48 @@ jobs:
           -DTTK_ENABLE_CPU_OPTIMIZATION=FALSE ^
           -DTTK_ENABLE_SHARED_BASE_LIBRARIES=TRUE ^
           -DTTK_IMPLICIT_PRECONDITIONS_THRESHOLD=64*64*64 ^
-          -G"Visual Studio 17 2022" ^
-          -Tclangcl ^
+          -GNinja ^
           ..
 
-    - name: Build & install TTK
+    - name: Fix clang-cl OpenMP flags in build.ninja
       shell: bash
+      run: |
+        sed -i 's/-Xclang -fopenmp/-openmp/' build/build.ninja
+
+    - name: Build & install TTK
+      shell: cmd
       run: |
         cd build
+        call "%ProgramFiles%\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
         cmake --build . --config Release --parallel --target install
-        # set PATH environment variable
-        echo "$PV_DIR/bin" >> $GITHUB_PATH
-        echo "$TTK_DIR/bin" >> $GITHUB_PATH
 
     - name: Test C++ example
       shell: cmd
       run: |
+        set CC=clang-cl.exe
+        set CXX=clang-cl.exe
+        call "%ProgramFiles%\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
         set CMAKE_PREFIX_PATH=%TTK_DIR%\lib\cmake;%PV_DIR%\lib\cmake
         cd %GITHUB_WORKSPACE%\examples\c++
         mkdir build
         cd build
-        cmake -G"Visual Studio 17 2022" -Tclangcl ..
+        cmake -DCMAKE_BUILD_TYPE=Release -GNinja ..
         cmake --build . --config Release --parallel
-        Release\ttkExample-c++.exe -i ..\..\data\inputData.off
+        ttkExample-c++.exe -i ..\..\data\inputData.off
 
     - name: Test VTK-C++ example
       shell: cmd
       run: |
+        set CC=clang-cl.exe
+        set CXX=clang-cl.exe
+        call "%ProgramFiles%\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
         set CMAKE_PREFIX_PATH=%TTK_DIR%\lib\cmake;%PV_DIR%\lib\cmake
         cd %GITHUB_WORKSPACE%\examples\vtk-c++
         mkdir build
         cd build
-        cmake -G"Visual Studio 17 2022" -Tclangcl ..
+        cmake -DCMAKE_BUILD_TYPE=Release -GNinja ..
         cmake --build . --config Release --parallel
-        Release\ttkExample-vtk-c++.exe -i ..\..\data\inputData.vtu
+        ttkExample-vtk-c++.exe -i ..\..\data\inputData.vtu
 
     - name: Test Python example
       shell: cmd
diff --git a/core/base/lDistanceMatrix/LDistanceMatrix.h b/core/base/lDistanceMatrix/LDistanceMatrix.h
index 40139dc210..5787aefee0 100644
--- a/core/base/lDistanceMatrix/LDistanceMatrix.h
+++ b/core/base/lDistanceMatrix/LDistanceMatrix.h
@@ -53,8 +53,7 @@ int ttk::LDistanceMatrix::execute(std::vector<std::vector<double>> &output,
 
   // compute matrix upper triangle
 #ifdef TTK_ENABLE_OPENMP
-#pragma omp parallel for num_threads(this->threadNumber_) schedule(dynamic) \
-  firstprivate(worker)
+#pragma omp parallel for num_threads(this->threadNumber_) firstprivate(worker)
 #endif // TTK_ENABLE_OPENMP
   for(size_t i = 0; i < nInputs; ++i) {
     for(size_t j = i + 1; j < nInputs; ++j) {