diff --git a/.github/workflows/unix_build.yml b/.github/workflows/unix_build.yml
index 41f19574..d4b87359 100644
--- a/.github/workflows/unix_build.yml
+++ b/.github/workflows/unix_build.yml
@@ -44,7 +44,7 @@ jobs:
               if: matrix.os == 'macos-latest'
               run: |
                   brew install boost fontconfig freeimage
-                  brew cask install xquartz
+                  brew install --cask xquartz
                   echo "CMAKE_PROGRAM=cmake" >> $GITHUB_ENV
 
             - name: Install Common Dependencies for Ubuntu
diff --git a/examples/cpu/bubblechart.cpp b/examples/cpu/bubblechart.cpp
index 7ee46d55..ff6a9964 100644
--- a/examples/cpu/bubblechart.cpp
+++ b/examples/cpu/bubblechart.cpp
@@ -60,7 +60,8 @@ int main(void) {
     std::vector<float> radii(tanData.size());
 
     std::generate(colors.begin(), colors.end(), clr);
-    std::generate(radii.begin(), radii.end(), rnd);
+    std::generate(radii.begin(), radii.end(),
+                  [&] { return 20.0f + 60.0f * rnd(); });
     std::generate(alphas.begin(), alphas.end(), alp);
 
     /*
diff --git a/examples/cpu/surface.cpp b/examples/cpu/surface.cpp
index 7eca2711..a6e25548 100644
--- a/examples/cpu/surface.cpp
+++ b/examples/cpu/surface.cpp
@@ -17,12 +17,12 @@
 
 using namespace std;
 
-static const float XMIN = -32.0f;
-static const float XMAX = 32.0f;
-static const float YMIN = -32.0f;
-static const float YMAX = 32.0f;
+static const float XMIN = -8.0f;
+static const float XMAX = 8.0f;
+static const float YMIN = -8.0f;
+static const float YMAX = 8.0f;
 
-const float DX     = 0.25;
+const float DX     = 0.5;
 const size_t XSIZE = (size_t)((XMAX - XMIN) / DX);
 const size_t YSIZE = (size_t)((YMAX - YMIN) / DX);