DPM++ 2M alt Sampler for ComfyUI (And WebUI) and Align Your Steps Scheduler
https://github.com/SLAPaper/StableDiffusion-dpmpp_2m_alt-Sampler
git clone https://github.com/SLAPaper/StableDiffusion-dpmpp_2m_alt-Sampler
comfy node install stablediffusion-dpmpp_2m_alt-sampler