Update app.py

app.py

@@ -85,7 +85,7 @@ model_config.update({
     'class_cond': False,
     'diffusion_steps': 1000,
     'rescale_timesteps': True,
-    'timestep_respacing': '100',  # Modify this value to decrease the number of
+    'timestep_respacing': '300',  # Modify this value to decrease the number of
                                    # timesteps.
     'image_size': 256,
     'learn_sigma': True,