Add euler_ancestral_pp which is the ancestral version of euler with the same modification.
This node should match the DDIM implementation of CFG++ when "regular" is selected. "alternative" is a slightly different take on CFG++
This sampler is an LCM sampler that upscales the latent during sampling. It can be used to generate at a higher resolution with an LCM model very quickly. To try it use it with a basic 5 step LCM workflow with scale_ratio 1.5 or 2.0
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