diff --git a/.github/workflows/backends.yml b/.github/workflows/backends.yml
index 53851d0..cfbe27b 100644
--- a/.github/workflows/backends.yml
+++ b/.github/workflows/backends.yml
@@ -30,8 +30,6 @@ jobs:
             defines: '-DGGML_AVX2=ON -DSD_BUILD_SHARED_LIBS=ON'
           - build: 'avx512'
             defines: '-DGGML_AVX512=ON -DSD_BUILD_SHARED_LIBS=ON'
-          - build: 'cuda11'
-            defines: '-DSD_CUBLAS=ON -DSD_BUILD_SHARED_LIBS=ON -DCMAKE_CUDA_FLAGS="-allow-unsupported-compiler"'
           - build: 'cuda12'
             defines: '-DSD_CUBLAS=ON -DSD_BUILD_SHARED_LIBS=ON'
           - build: 'rocm5'
@@ -48,17 +46,6 @@ jobs:
           ref: '${{ github.event.inputs.commit }}'
           submodules: recursive
 
-      - name: Install cuda-toolkit
-        id: cuda-toolkit-11
-        if: ${{ matrix.build == 'cuda11' }}
-        uses: Jimver/cuda-toolkit@v0.2.14
-        with:
-          cuda: '11.8.0'
-          method: network
-          sub-packages: '["nvcc", "cudart", "cublas", "cublas_dev", "thrust", "visual_studio_integration"]'
-          use-github-cache: false
-          use-local-cache: false
-
       - name: Install cuda-toolkit
         id: cuda-toolkit-12
         if: ${{ matrix.build == 'cuda12' }}
@@ -116,6 +103,51 @@ jobs:
         with:
           name: windows-${{ matrix.build }}
           path: .\build\bin\stable-diffusion.dll  
+
+  windows-2019:
+    runs-on: windows-2019
+        
+    strategy:
+      matrix:
+        include:
+          - build: 'cuda11'
+            defines: '-DSD_CUBLAS=ON -DSD_BUILD_SHARED_LIBS=ON -DCMAKE_CUDA_FLAGS="-allow-unsupported-compiler"'
+
+    steps:
+      - name: Checkout
+        id: checkout
+        uses: actions/checkout@v4.1.2
+        with:
+          repository: 'leejet/stable-diffusion.cpp'
+          ref: '${{ github.event.inputs.commit }}'
+          submodules: recursive
+
+      - name: Install cuda-toolkit
+        id: cuda-toolkit-11
+        if: ${{ matrix.build == 'cuda11' }}
+        uses: Jimver/cuda-toolkit@v0.2.16
+        with:
+          cuda: '11.8.0'
+          method: network
+          sub-packages: '["nvcc", "cudart", "cublas", "cublas_dev", "thrust", "visual_studio_integration"]'
+          use-github-cache: false
+          use-local-cache: false
+
+      - name: Build
+        id: cmake_build
+        run: |
+          mkdir build
+          cd build
+          cmake .. ${{ matrix.defines }}
+          cmake --build . --config Release
+      
+      - name: Upload artifact
+        id: upload_artifact
+        if: ${{ matrix.build != 'rocm5' }}
+        uses: actions/upload-artifact@v4.3.1
+        with:
+          name: windows-${{ matrix.build }}
+          path: .\build\bin\Release\stable-diffusion.dll
           
   windows-sycl:
     runs-on: windows-latest
diff --git a/StableDiffusion.NET/Helper/ImageHelper.cs b/StableDiffusion.NET/Helper/ImageHelper.cs
index dbccb15..1c38a31 100644
--- a/StableDiffusion.NET/Helper/ImageHelper.cs
+++ b/StableDiffusion.NET/Helper/ImageHelper.cs
@@ -8,21 +8,29 @@ internal static class ImageHelper
 {
     public static unsafe Image<ColorRGB> ToImage(Native.sd_image_t* sdImage)
     {
-        int width = (int)sdImage->width;
-        int height = (int)sdImage->height;
-        int bpp = (int)sdImage->channel;
+        Image<ColorRGB> image = ToImage(*sdImage);
 
-        Image<ColorRGB> image = Image<ColorRGB>.Create(new ReadOnlySpan<byte>(sdImage->data, width * height * bpp), width, height, width * bpp);
+        Marshal.FreeHGlobal((nint)sdImage);
+
+        return image;
+    }
+
+    public static unsafe Image<ColorRGB> ToImage(Native.sd_image_t sdImage)
+    {
+        int width = (int)sdImage.width;
+        int height = (int)sdImage.height;
+        int bpp = (int)sdImage.channel;
+
+        Image<ColorRGB> image = Image<ColorRGB>.Create(new ReadOnlySpan<byte>(sdImage.data, width * height * bpp), width, height, width * bpp);
 
         Dispose(sdImage);
 
         return image;
     }
 
-    public static unsafe void Dispose(Native.sd_image_t* image)
+    public static unsafe void Dispose(Native.sd_image_t image)
     {
-        Marshal.FreeHGlobal((nint)image->data);
-        Marshal.FreeHGlobal((nint)image);
+        Marshal.FreeHGlobal((nint)image.data);
     }
 
     public static unsafe Native.sd_image_t ToSdImage(this IImage<ColorRGB> image, byte* pinnedReference)
diff --git a/StableDiffusion.NET/Models/UpscaleModel.cs b/StableDiffusion.NET/Models/UpscaleModel.cs
index eb7e610..600f5b3 100644
--- a/StableDiffusion.NET/Models/UpscaleModel.cs
+++ b/StableDiffusion.NET/Models/UpscaleModel.cs
@@ -58,14 +58,14 @@ public IImage<ColorRGB> Upscale(IImage image, int upscaleFactor)
         fixed (byte* imagePtr = sourceImage.AsRefImage())
         {
             Native.sd_image_t result = Native.upscale(_ctx, sourceImage.ToSdImage(imagePtr), upscaleFactor);
-            return ImageHelper.ToImage(&result);
+            return ImageHelper.ToImage(result);
         }
     }
 
     private IImage<ColorRGB> Upscale(Native.sd_image_t image, int upscaleFactor)
     {
         Native.sd_image_t result = Native.upscale(_ctx, image, upscaleFactor);
-        return ImageHelper.ToImage(&result);
+        return ImageHelper.ToImage(result);
     }
 
     public void Dispose()