Just to be perfectly clear : I customized an existing workflow : if you recognize another workflow somewhere else you are right : I copied it and not the other way around. Here I'm just tweaking and rephrasing, not inventing anything, except adding two nodes to format the prompt with ollama. And providing tips around ComfyUI.. but that's it !!

This workflow is basically all I'm looking for in a workflow, but using the excellent FLUX 1 DEV :

My configuration :

Intel I7 / 32 GB RAM / RTX 3070 8GB VRAM

SSD 2TB / PYTHON 3.12.6

NO XFORMERS. I'm not against xformers. I installed it on a previous
configuration with Python 3.10. I recently changed Python version by
adding a new venv to my existing Comfyui. It took me long enough on
personal time so I just didn't feel like going further.

Prompt formatting :

ai formatting using your own selfhosted ollama host

Requires Ollama, recommended with a uncensored llm like dolphin-mistral :  https://ollama.com/

In  my set up, I set the OLLAMA_HOST system environment variable, but this
is not mandatory. If you serve your ollama on your own PC, 127.0.0.1
will do just fine.

Multiple upscalers :

I'm using two pass of upscales to achive a proper level of details on the first generated image.

By the way, I download my upscalers from :  https://openmodeldb.info/

Other :

separated clips : please be careful to load the right model

separated VAE : depending on you using the model's vae, please bypass the node

Destined to FLUX based models !

Last but no least, if you can't achieve a download via "Install Missing
Custom Nodes", please post a comment. but you should be alright with the
ComfyUi Manager node.

Enjoy !!!