RealVisXL V4.0 Lightning The model is aimed at photorealism. Can produce sfw and nsfw images of decent quality.

Use Lightning models with DPM++ SDE Karras / DPM++ SDE sampler, 4-6 steps and CFG Scale 1-2

Recommended Negative Prompt:

(worst quality, low quality, illustration, 3d, 2d, painting, cartoons, sketch), open mouth

or another negative prompt

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Recommended Generation Parameters: Sampling Steps: 15-30+ Sampling Method: DPM++ 2M Karras / or another

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Hires Fix Parameters:

Denoising strength: 0.1-0.5