Add readme note

README.md

@@ -29,6 +29,7 @@ This ui will let you design and execute advanced stable diffusion pipelines usin
 - [Upscale Models (ESRGAN, ESRGAN variants, SwinIR, Swin2SR, etc...)](https://comfyanonymous.github.io/ComfyUI_examples/upscale_models/)
 - [unCLIP Models](https://comfyanonymous.github.io/ComfyUI_examples/unclip/)
 - [GLIGEN](https://comfyanonymous.github.io/ComfyUI_examples/gligen/)
+- Latent previews with [TAESD](https://github.com/madebyollin/taesd)
 - Starts up very fast.
 - Works fully offline: will never download anything.
 - [Config file](extra_model_paths.yaml.example) to set the search paths for models.
@@ -181,6 +182,10 @@ You can set this command line setting to disable the upcasting to fp32 in some c
 
 ```--dont-upcast-attention```
 
+## How to show high-quality previews?
+
+The default installation includes a fast latent preview method that's low-resolution. To enable higher-quality previews with [TAESD](https://github.com/madebyollin/taesd), download the [taesd_encoder.pth](https://github.com/madebyollin/taesd/raw/main/taesd_encoder.pth) and [taesd_decoder.pth](https://github.com/madebyollin/taesd/raw/main/taesd_decoder.pth) models and place them in the `models/taesd` folder. Once they're installed, restart ComfyUI to enable high-quality previews.
+
 ## Support and dev channel
 
 [Matrix space: #comfyui_space:matrix.org](https://app.element.io/#/room/%23comfyui_space%3Amatrix.org) (it's like discord but open source).