Update README.md

README.md

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 Test the concept via A1111 Colab [fast-Colab-A1111](https://colab.research.google.com/github/TheLastBen/fast-stable-diffusion/blob/main/fast_stable_diffusion_AUTOMATIC1111.ipynb)
 Or you can run your new concept via `diffusers` [Colab Notebook for Inference](https://colab.research.google.com/github/huggingface/notebooks/blob/main/diffusers/sd_dreambooth_inference.ipynb)
 
-Consistancy is a little rough here, as it seems to struggle choosing between being painterly or realistic, but it works well enough for me. Pre-append every prompt with "GregRutkowski artwork, ", as this seems to give better results than putting it at the end of the prompt.
+Consistancy is a little rough here, as it seems to struggle choosing between being painterly or realistic, but it works well enough for me. Pre-append every prompt with "GregRutkowski artwork, ", as this seems to give better results than putting it at the end of the prompt. Also use a CFG between 9.0 and 12.0, with a non-ancestral sampler, as these values personally gave me the best quality outputs. Also negative prompts, they help.
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+NOTE: This model is FP16, so it may have issues working without Xformers, though I haven't tested this myself.
 
 Sample pictures of this concept: