Update app.py

app.py

@@ -253,8 +253,9 @@ with gr.Blocks(title="🌍 ZenCtrl") as demo:
                         remove_bg_checkbox,
                         input_image,
                     ],
-                    outputs=[output_image]
-                    #concurrency_limit=None
+                    outputs=[output_image],
+                    concurrency_limit=5,  # ✅ add this
+                    concurrency_id="generation"  # ✅ optional but good practice
                 )
 
                 # ---------------- Templates --------------------