You have the option to utilize Stability AI's Original VAE, or experiment with other VAE models.
This exemplary set of prompting and generated data (from the 3rd thread posted image)
Prompt: 2girl, portrait, realistic, bare shoulders, naked towel, sidelighting, wallpaper, nsfw,
Negative prompt: (worst quality:2, low quality:2), (zombie, sketch, interlocked fingers, comic),
Generation Data :
Eta: 0.68, ENSD: 31337, Size: 512x1024, Seed: 2158295917, Model: naphael-D, Steps: 25, Sampler: Euler a, CFG scale: 7, Clip skip: 2, Model hash: ea4980559b, Hires steps: 10, Hires upscale: 2, Hires upscaler: 4x-UltraSharp, Denoising strength: 0.3
For a more 2.5D feel, consider including a "realistic" prompt
For optimal results, try a clip skip of 1 or 2, and enable quantization in K samplers, with an ENSD of 31337 and Eta at 0.68.
If the character in the prompt is far away, Hires.fix may be necessary, with options such as R-ESRGAN 4x+Anime6b or 4x Ultrasharp, with 10 steps at 0.1 up to 0.3 denoising.
Experiment with various prompts and parameters to generate different artwork.

I encourage you to explore this model and experiment with different prompts and parameters. Constructive feedback is welcome, and please share your stunning artwork here for all to enjoy. Thank you for your support, and let's have some fun!

I'm relatively new to this field and hope to contribute what I can to this community.