使用CFG版本会在画面留下色彩斑块

#40
by windecay - opened

使用12step-cfg测试了很多采样器,步数12,CFG为7,图像上有残留的色彩斑块,画质更低。 使用旧版本的8steps-lora并不会如此。

L_8JO68IZN7$}V0NRM73MAU.png

ByteDance org

Hi, @windecay
Could you please try lower CFG values?
In general, it is caused by too strong reinforcement of high-frequency information.

1cat,,lora:Hyper-SDXL-12steps-CFG-lora:1
Steps: 12, Sampler: Euler A SGMUniform, CFG scale: 5, Seed: 66297892, Size: 1024x1024, Model hash: ee1fdc86f7, Model: GhostXL_V1.0-Baked VAE, Style Selector Enabled: True, Style Selector Randomize: False, Style Selector Style: base, Lora hashes: "Hyper-SDXL-12steps-CFG-lora: 48805f180969", Version: f0.0.17v1.8.0rc-latest-276-g29be1da7

cfg5.png
Yellow patches in the upper left and lower right corners of the image. I used a lower cfg, but it still cannot be avoided.

ByteDance org

@windecay
We'll try improving this.

The plaques are not obvious when CFG is between 2-3.

1cat,,lora:Hyper-SDXL-12steps-CFG-lora:1
Steps: 12, Sampler: Euler A SGMUniform, CFG scale: 5, Seed: 66297892, Size: 1024x1024, Model hash: ee1fdc86f7, Model: GhostXL_V1.0-Baked VAE, Style Selector Enabled: True, Style Selector Randomize: False, Style Selector Style: base, Lora hashes: "Hyper-SDXL-12steps-CFG-lora: 48805f180969", Version: f0.0.17v1.8.0rc-latest-276-g29be1da7

cfg5.png
Yellow patches in the upper left and lower right corners of the image. I used a lower cfg, but it still cannot be avoided.

Did you try with the scheduler : ddim_uniform ?

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