My own version 'from scratch' of a self-rescaling CFG. It isn't much but it's honest work. TLDR: set your CFG at 8 to try it. No burned images and artifacts anymore. CFG is also a bit more sensitive because it's a proportion around 8. Low scale like 4 also gives really nice results since your CFG is not the CFG anymore. Also in general even with relatively low settings it seems to improve the quality.
https://github.com/Extraltodeus/ComfyUI-AutomaticCFG
git clone https://github.com/Extraltodeus/ComfyUI-AutomaticCFG
comfy node install comfyui-automaticcfg