Update README.md

README.md

@@ -48,6 +48,8 @@ To replicate images from Section 4.2 of the paper, you can use the following:
 image = pipeline(prompt_1, prompt_2, seed=1, num_inference_steps=1000, batch_size=20, lift=0.0, guidance_scale=7.5)
 ```
 
+(Note: the runtime for a batch size of 1 on an NVIDIA A40 GPU is around 3 mins 30 sec.)
+
 ## Citation
 
 **BibTeX:**