Latent Consistency Model (LCM) LoRA
Use it with any 1.5 model and you will see how your renders fly.
CFG 1-2
Steps 3-6
...and yes, I'm not crazy.
It still does not work well with all Samplers, I recommend DPM++ SDE Karras that you implement the sampler designed for this system.
Thanks to Raivshard for this note: for hi-res fix, do not use LCM at full strength, or results will be dirty and grainy. I've found better results overall from using LCM at 0.5 strength or lower.