Update app.py

app.py

@@ -80,8 +80,8 @@ with gr.Blocks(css="style.css") as demo:
                     
                 device_choices = ['GPU','CPU']
                 device_type = gr.Radio(device_choices, label='Device',  
-                                            value=device_choices[0],
-                                            interactive=True,
+                                            value=device_choices[1],
+                                            interactive=False,
                                             info='Only CPU now.')
 
                 vae_choices = ['tiny vae','large vae']