Update app.py

app.py

@@ -371,8 +371,10 @@ markdown=f'''
 
   ### Usage:
   First enter prompt for a 3D object, hit "Generate 3D". Then choose one candidate from the dropdown options for the second stage refinement and hit "Start Refinement". The final mesh can be downloaded from the bottom right box.
+
+  Note that this demo is not the complete version due to resource limitations. Specifically, the second stage only uses one-step optimization instead of two, which could result in blurry textures. Please kindly refer to our github repo for the complete version.
   
-  ### Runtime:
+  ### Generation Speed:
   The first stage takes 30s if generating 4 samples. The second stage takes roughly 1m30s.
 
   ### Useful links: