FLUX banding/striping in image

[BrechtCorbeel]

I asked on the FLUX model Github too, but since it's likely a node setting or model change I am asking here too:

Anyone know how to get rid of this sort of banding/striping happening in the image?

[ltdrdata]

What is your workflow?

[BrechtCorbeel]

What is your workflow?

I currently changed to the DEV model from hugging face, these results is what I got from using the ones from the comfyui browser.

Once I switched it cleared up

[ltdrdata]

Do you meaning it is the model problem?

[BrechtCorbeel]

Do you meaning it is the model problem?

It was a model problem for me or maybe a missmatch somewhere with the schnell model, but when I switched to the [Dev] model from huggingface everything worked fine.

[Vagrin]

I've gotten banding with every Flux model when large 2K images are generated. I think it's a problem with Flux not any sort of upscaler/tiler because you'll get it if you just ask Flux to generate an image that large. No one has come across a fix?

[FunnyFinger]

I have the same problem, but vertical, maybe I'm using wide aspect ratio instade of portrait. Also this happens only when upscaling, but not always. It's seems that if I use a combined lora wieght greater than 1, I most likely will get banding. Also I noticed that I'll get some noise in blurred background areas when upscaling. I'm using ultimate upscaler with the same Flux 1 dev model, changing the sampler or scheduler wont affect the result. At this point, only Loras are affecting my results.

[Sana-A-E]

Not a Comfy issue but Flux issue:
lllyasviel/stable-diffusion-webui-forge#1712

[Vagrin]

Not my experience. I got the same banding in ComfyUI and my friend who only uses ComfyUI says it's there as well. [shrug] We'll see how it all works itself out.

[jozefcoder]

I asked on the FLUX model Github too, but since it's likely a node setting or model change I am asking here too:

Anyone know how to get rid of this sort of banding/striping happening in the image?

I know how to solve this problem for up to 4-5 megapixels.

[jozefcoder]

The solution is in pdf here, not free https://ko-fi.com/s/2f2d90c749
and copy here https://www.patreon.com/jpaedu/shop/mastering-ai-image-generation-with-flux-810873

But there is much more addressed, please see the description.

[jozefcoder]

See the solution in lllyasviel/stable-diffusion-webui-forge#1712

[vararth]

@jozefcoder gatekeeping solutions to open source developments is a fun idea - but restricts freedom as well. If you have a solution - please post it as well rather than just self promote..

For others - no real solution exists, you should use the correct resolution for your images - many LoRA's increase the stripes bug. Additionally, once you have a clean image - you can upscale with the Upscaler ControlNet and the UltimateSDUpscale method - but remember to use lower LoRA weights, low denoise and low CFG for this to avoid stripes. It is not a foolproof solution but does work most of the time to avoid the stripes / grid / lines .