If you are in need of another unnecessary Flux model ... using this model is straightforward:

Sampler: Euler

Scheduler: Simple

Steps: 25

CFG: 3.5

For best image quality use t5xxl_fp16.safetensors and one of the new improved textencoders,

for example ViT-L-14-TEXT-detail-improved-hiT-GmP-HF.safetensors