This achieves a 2x speedup on FLUX.1-dev and HunyuanVideo inference with very good quality.  
<figure>
<img src="https://huggingface.co/datasets/chengzeyi/documentation-images/resolve/main/diffusers/para-attn/ada-cache.png" alt="Cache in Diffusion Transformer" />
<figcaption>How AdaCache works, First Block Cache is a variant of it</figcaption>
</figure>  
<hfoptions id="first-block-cache">
<hfoption id="FLUX-1.dev">