Update app.py

app.py

@@ -307,6 +307,7 @@ iface = gr.Interface(fn=retry_prompt_to_layout, inputs=[textbox, creative_slider
                      css=custom_css,
                      theme="default",
                      allow_flagging='never',
-                     examples=examples)
+                     examples=examples,
+                     concurrency_limit=20)
 
 iface.queue().launch()