diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3ffc726a..f07f250e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -195,77 +195,77 @@ jobs:
         name: ${{matrix.pkg_platform}} installer
         path: ${{runner.workspace}}/build/${{env.install_name}}.exe
 
-  build_for_mingw:
-    runs-on: ubuntu-18.04
-    strategy:
-      matrix:
-        include:
-        - platform: i686
-          pkg_platform: Win32
-          bits: 32
-        - platform: x86_64
-          pkg_platform: Win64
-          bits: 64
-    container:
-      image: archlinux
-    steps:
-    - name: Set install name
-      run: |
-        echo "install_ref=${GITHUB_REF##*/}" >> "$GITHUB_ENV"
-        echo "install_name=sfizz-${GITHUB_REF##*/}-mingw${{matrix.bits}}" >> "$GITHUB_ENV"
-    - name: Configure pacman repositories
-      shell: bash
-      run: |
-        cat >>/etc/pacman.conf <<EOF
-        [multilib]
-        Include = /etc/pacman.d/mirrorlist
-        [mingw-w64]
-        SigLevel = Optional TrustAll
-        Server = https://github.com/jpcima/arch-mingw-w64/releases/download/repo.\$arch/
-        EOF
-    - name: Set up dependencies
-      shell: bash
-      run: |
-        pacman -Sqyu --noconfirm
-        pacman -Sq --needed --noconfirm base-devel git wget ninja mingw-w64-cmake mingw-w64-gcc mingw-w64-pkg-config mingw-w64-libsndfile
-    - uses: actions/checkout@v2
-      with:
-        submodules: recursive
-    - name: Fix MinGW headers
-      shell: bash
-      run: |
-        cp -vf "$GITHUB_WORKSPACE"/scripts/mingw_dwrite_3.h \
-            /usr/${{matrix.platform}}-w64-mingw32/include/dwrite_3.h
-    - name: Create Build Environment
-      shell: bash
-      working-directory: ${{runner.workspace}}
-      run: cmake -E make_directory build
-    - name: Configure CMake
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: |
-        ${{matrix.platform}}-w64-mingw32-cmake "$GITHUB_WORKSPACE" -G Ninja \
-          -DCMAKE_BUILD_TYPE="$BUILD_TYPE" \
-          -DENABLE_LTO=OFF \
-          -DSFIZZ_JACK=OFF \
-          -DSFIZZ_VST=ON \
-          -DSFIZZ_PUREDATA=ON \
-          -DSFIZZ_STATIC_DEPENDENCIES=ON \
-          -DCMAKE_CXX_STANDARD=17
-    - name: Build
-      shell: bash
-      working-directory: ${{runner.workspace}}/build
-      run: ${{matrix.platform}}-w64-mingw32-cmake --build . --config "$BUILD_TYPE" -j 2
-    - name: Install
-      working-directory: ${{runner.workspace}}/build
-      shell: bash
-      run: |
-        DESTDIR="$(pwd)/$install_name" ${{matrix.platform}}-w64-mingw32-cmake --build . --config "$BUILD_TYPE" --target install
-        tar czvf "$install_name".tar.gz "$install_name"
-    - uses: actions/upload-artifact@v2
-      with:
-        name: ${{matrix.pkg_platform}} MinGW tarball
-        path: ${{runner.workspace}}/build/${{env.install_name}}.tar.gz
+  # build_for_mingw:
+  #   runs-on: ubuntu-18.04
+  #   strategy:
+  #     matrix:
+  #       include:
+  #       - platform: i686
+  #         pkg_platform: Win32
+  #         bits: 32
+  #       - platform: x86_64
+  #         pkg_platform: Win64
+  #         bits: 64
+  #   container:
+  #     image: archlinux
+  #   steps:
+  #   - name: Set install name
+  #     run: |
+  #       echo "install_ref=${GITHUB_REF##*/}" >> "$GITHUB_ENV"
+  #       echo "install_name=sfizz-${GITHUB_REF##*/}-mingw${{matrix.bits}}" >> "$GITHUB_ENV"
+  #   - name: Configure pacman repositories
+  #     shell: bash
+  #     run: |
+  #       cat >>/etc/pacman.conf <<EOF
+  #       [multilib]
+  #       Include = /etc/pacman.d/mirrorlist
+  #       [mingw-w64]
+  #       SigLevel = Optional TrustAll
+  #       Server = https://github.com/jpcima/arch-mingw-w64/releases/download/repo.\$arch/
+  #       EOF
+  #   - name: Set up dependencies
+  #     shell: bash
+  #     run: |
+  #       pacman -Sqyu --noconfirm
+  #       pacman -Sq --needed --noconfirm base-devel git wget ninja mingw-w64-cmake mingw-w64-gcc mingw-w64-pkg-config mingw-w64-libsndfile
+  #   - uses: actions/checkout@v2
+  #     with:
+  #       submodules: recursive
+  #   - name: Fix MinGW headers
+  #     shell: bash
+  #     run: |
+  #       cp -vf "$GITHUB_WORKSPACE"/scripts/mingw_dwrite_3.h \
+  #           /usr/${{matrix.platform}}-w64-mingw32/include/dwrite_3.h
+  #   - name: Create Build Environment
+  #     shell: bash
+  #     working-directory: ${{runner.workspace}}
+  #     run: cmake -E make_directory build
+  #   - name: Configure CMake
+  #     shell: bash
+  #     working-directory: ${{runner.workspace}}/build
+  #     run: |
+  #       ${{matrix.platform}}-w64-mingw32-cmake "$GITHUB_WORKSPACE" -G Ninja \
+  #         -DCMAKE_BUILD_TYPE="$BUILD_TYPE" \
+  #         -DENABLE_LTO=OFF \
+  #         -DSFIZZ_JACK=OFF \
+  #         -DSFIZZ_VST=ON \
+  #         -DSFIZZ_PUREDATA=ON \
+  #         -DSFIZZ_STATIC_DEPENDENCIES=ON \
+  #         -DCMAKE_CXX_STANDARD=17
+  #   - name: Build
+  #     shell: bash
+  #     working-directory: ${{runner.workspace}}/build
+  #     run: ${{matrix.platform}}-w64-mingw32-cmake --build . --config "$BUILD_TYPE" -j 2
+  #   - name: Install
+  #     working-directory: ${{runner.workspace}}/build
+  #     shell: bash
+  #     run: |
+  #       DESTDIR="$(pwd)/$install_name" ${{matrix.platform}}-w64-mingw32-cmake --build . --config "$BUILD_TYPE" --target install
+  #       tar czvf "$install_name".tar.gz "$install_name"
+  #   - uses: actions/upload-artifact@v2
+  #     with:
+  #       name: ${{matrix.pkg_platform}} MinGW tarball
+  #       path: ${{runner.workspace}}/build/${{env.install_name}}.tar.gz
 
   build_with_makefile:
     runs-on: ubuntu-18.04
@@ -330,7 +330,7 @@ jobs:
     needs:
       - build_for_linux
       - build_for_mod
-      - build_for_mingw
+      # - build_for_mingw
       - build_for_windows
       - archive_source_code
     steps:
@@ -343,12 +343,12 @@ jobs:
       - uses: actions/download-artifact@v2
         with:
           name: MOD devices tarball
-      - uses: actions/download-artifact@v2
-        with:
-          name: Win32 MinGW tarball
-      - uses: actions/download-artifact@v2
-        with:
-          name: Win64 MinGW tarball
+      # - uses: actions/download-artifact@v2
+      #   with:
+      #     name: Win32 MinGW tarball
+      # - uses: actions/download-artifact@v2
+      #   with:
+      #     name: Win64 MinGW tarball
       - uses: actions/download-artifact@v2
         with:
           name: Win32 installer
diff --git a/src/sfizz/Effects.cpp b/src/sfizz/Effects.cpp
index 81cc3d00..2ca5b8a4 100644
--- a/src/sfizz/Effects.cpp
+++ b/src/sfizz/Effects.cpp
@@ -119,8 +119,6 @@ void EffectBus::addToInputs(const float* const addInput[], float addGain, unsign
     if (addGain == 0)
         return;
 
-    _hasSignal = true;
-
     for (unsigned c = 0; c < EffectChannels; ++c) {
         absl::Span<const float> addIn { addInput[c], nframes };
         sfz::multiplyAdd1(addGain, addIn, _inputs.getSpan(c).first(nframes));
@@ -165,8 +163,6 @@ void EffectBus::process(unsigned nframes)
         fx::Nothing().process(
             AudioSpan<float>(_inputs), AudioSpan<float>(_outputs), nframes);
     }
-
-    _hasSignal = false;
 }
 
 void EffectBus::mixOutputsTo(float* const mainOutput[], float* const mixOutput[], unsigned nframes)
@@ -185,6 +181,7 @@ size_t EffectBus::numEffects() const noexcept
 {
     return _effects.size();
 }
+
 void EffectBus::setSamplesPerBlock(int samplesPerBlock) noexcept
 {
     _inputs.resize(samplesPerBlock);
diff --git a/src/sfizz/Effects.h b/src/sfizz/Effects.h
index 25ce96e5..804bc4ad 100644
--- a/src/sfizz/Effects.h
+++ b/src/sfizz/Effects.h
@@ -109,7 +109,7 @@ public:
     /**
        @brief Checks whether this bus can produce output.
      */
-    bool hasNonZeroOutput() const { return _hasSignal && (_gainToMain != 0 || _gainToMix != 0); }
+    bool hasNonZeroOutput() const { return (_gainToMain != 0 || _gainToMix != 0); }
 
     /**
        @brief Sets the amount of effect output going to the main.
@@ -189,7 +189,6 @@ private:
     AudioBuffer<float> _outputs { EffectChannels, config::defaultSamplesPerBlock };
     float _gainToMain { Default::effect };
     float _gainToMix { Default::effect };
-    bool _hasSignal { false };
 };
 
 } // namespace sfz