Update app.py

app.py

@@ -784,7 +784,7 @@ def generate_image(
     generator = torch.Generator(device=device).manual_seed(seed)
     x = torch.randn(1, 16, 2 * math.ceil(height / 16), 2 * math.ceil(width / 16), device=device, dtype=torch.bfloat16, generator=generator) 
     
-    num_steps = 20
+    num_steps = 12
     timesteps = get_schedule(num_steps, (x.shape[-1] * x.shape[-2]) // 4, shift=True)
 
     if do_img2img and init_image is not None: