SD Forge Block Cache

This is an Extension for Forge Classic, which implements First Block Cache and Tea Cache, forked to focus on speeding up SDXL checkpoints.

To run Flux checkpoints on the new Forge Webui, use the original repo instead

Benchmark

• Generate a 896x1152 image using SDXL checkpoint in 64 Steps with Euler a sampler on a RTX 3060

\	Disabled	First Block Cache	Tea Cache	Tea Cache
Cache Start	n.a.	0.6	0.4	0.2
Cache Threshold		0.4	0.6	0.8
Cache Limit		0	0	1
Result
Time	45s	35s	25s	25s

Important

The Extension may result in some noisy patterns to appear on the images, with certain Sampling method causing worse effects; though using Cache Limit can help mitigate this, and doing another pass (eg. Hires. fix or img2img) usually cleans them up as well

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Special Thanks

• https://github.com/DenOfEquity/sd-forge-blockcache
• https://github.com/chengzeyi/Comfy-WaveSpeed
• https://github.com/ali-vilab/TeaCache