Update README.md

README.md

@@ -99,7 +99,7 @@ upper_quantile = forecast.quantile(0.9)
 For detailed inference instructions, refer to the [inference tutorial notebook](https://github.com/DataDog/toto/blob/main/toto/notebooks/inference_tutorial.ipynb).
 
 ### Performance Recommendations
-- **For optimal performance, install [xFormers](https://github.com/facebookresearch/xformers) and [flash-attention](https://github.com/Dao-AILab/flash-attention).**
+- ### **For optimal speed and reduced memory usage, install [xFormers](https://github.com/facebookresearch/xformers) and [flash-attention](https://github.com/Dao-AILab/flash-attention). Then, set `use_memory_efficient` to `True`.**
 
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