diff --git a/webgpu/webgl-optimization-none.html b/webgpu/webgl-optimization-none.html
index b0cbcae4..9370f9e1 100644
--- a/webgpu/webgl-optimization-none.html
+++ b/webgpu/webgl-optimization-none.html
@@ -324,7 +324,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');
 
diff --git a/webgpu/webgpu-optimization-all.html b/webgpu/webgpu-optimization-all.html
index 44309670..ce5b6c3f 100644
--- a/webgpu/webgpu-optimization-all.html
+++ b/webgpu/webgpu-optimization-all.html
@@ -425,7 +425,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');
 
diff --git a/webgpu/webgpu-optimization-none.html b/webgpu/webgpu-optimization-none.html
index 3654c9cf..571fb2ed 100644
--- a/webgpu/webgpu-optimization-none.html
+++ b/webgpu/webgpu-optimization-none.html
@@ -397,7 +397,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');
 
diff --git a/webgpu/webgpu-optimization-step3-global-vs-per-object-uniforms.html b/webgpu/webgpu-optimization-step3-global-vs-per-object-uniforms.html
index ad409e41..feca4b6e 100644
--- a/webgpu/webgpu-optimization-step3-global-vs-per-object-uniforms.html
+++ b/webgpu/webgpu-optimization-step3-global-vs-per-object-uniforms.html
@@ -425,7 +425,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');
 
diff --git a/webgpu/webgpu-optimization-step4-material-uniforms.html b/webgpu/webgpu-optimization-step4-material-uniforms.html
index 02b44a1c..d1332c69 100644
--- a/webgpu/webgpu-optimization-step4-material-uniforms.html
+++ b/webgpu/webgpu-optimization-step4-material-uniforms.html
@@ -430,7 +430,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');
 
diff --git a/webgpu/webgpu-optimization-step5-double-buffer-frequenly-updated-uniform-buffers.html b/webgpu/webgpu-optimization-step5-double-buffer-frequenly-updated-uniform-buffers.html
index d68edb1b..2ad2eb75 100644
--- a/webgpu/webgpu-optimization-step5-double-buffer-frequenly-updated-uniform-buffers.html
+++ b/webgpu/webgpu-optimization-step5-double-buffer-frequenly-updated-uniform-buffers.html
@@ -440,7 +440,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');
 
diff --git a/webgpu/webgpu-optimization-step5-use-buffer-offsets.html b/webgpu/webgpu-optimization-step5-use-buffer-offsets.html
index 3a1b2a13..3923bed7 100644
--- a/webgpu/webgpu-optimization-step5-use-buffer-offsets.html
+++ b/webgpu/webgpu-optimization-step5-use-buffer-offsets.html
@@ -433,7 +433,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');
 
diff --git a/webgpu/webgpu-optimization-step6-use-mapped-buffers.html b/webgpu/webgpu-optimization-step6-use-mapped-buffers.html
index a3c95113..b8067061 100644
--- a/webgpu/webgpu-optimization-step6-use-mapped-buffers.html
+++ b/webgpu/webgpu-optimization-step6-use-mapped-buffers.html
@@ -432,7 +432,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');
 
diff --git a/webgpu/webgpu-optimization-step7-double-buffer-typedarray-set-count-100.html b/webgpu/webgpu-optimization-step7-double-buffer-typedarray-set-count-100.html
index 57b2b302..021897e3 100644
--- a/webgpu/webgpu-optimization-step7-double-buffer-typedarray-set-count-100.html
+++ b/webgpu/webgpu-optimization-step7-double-buffer-typedarray-set-count-100.html
@@ -432,7 +432,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');
 
diff --git a/webgpu/webgpu-optimization-step7-double-buffer-typedarray-set.html b/webgpu/webgpu-optimization-step7-double-buffer-typedarray-set.html
index 0c9f532f..51ea014d 100644
--- a/webgpu/webgpu-optimization-step7-double-buffer-typedarray-set.html
+++ b/webgpu/webgpu-optimization-step7-double-buffer-typedarray-set.html
@@ -432,7 +432,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');
 
diff --git a/webgpu/webgpu-optimization-step7-double-buffer.html b/webgpu/webgpu-optimization-step7-double-buffer.html
index 3e0db6e0..2a2bfc7a 100644
--- a/webgpu/webgpu-optimization-step7-double-buffer.html
+++ b/webgpu/webgpu-optimization-step7-double-buffer.html
@@ -432,7 +432,6 @@
   };
 
   const gui = new GUI();
-  gui.onChange(render);
   gui.add(settings, 'numObjects', { min: 0, max: maxObjects, step: 1});
   gui.add(settings, 'render');