This is my first pure 3D render/Cartoon model. When I started working on this model I had almost zero knowledge on writing prompts for 3d renders/CGI. As such, my main goal for this model was quickly realized - Make a model that accepts photorealistic prompts and returns beautiful 3D rendered outputs. Normal 3D render/CGI prompts also work with this model.

Important Settings

The following settings assume you're using webui by Automatic1111

USE CFG VALUES BELLOW 8*
- This model does not respond well to CFG values above 8. With some caveats that will be explained bellow.
- Do not go over 6 CFG with Euler a unless,
- You are using Hires Fix. I found that you can go as high as 10 CFG with hires. fix enabled. This applies to all samplers.
- DPM++ SDE Karras starts to degrade around 7 CFG if using clip skip = 1, no hires fix. However, if you're using DPM++ SDE Karras with clip skip = 2 the CFG values can go up to at least 10 CFG without significant (if any) degradation.
- General Advice:
  - Do Not exceed 6 CFG with Euler a, unless using hires fix.
  - Do Not exceed 7 CFG with DPM++ SDE Karras with clip skip set to 1, unless using hires fix.
  - You Can go up to at least 10 CFG with DPM++ SDE Karras with clip skip set to 2, without using hires fix.
  - I could not test all samplers. If you notice broken compositions or distortions; lower your CFG value and/or enable hires fix. My own personal settings for hires fix can be found bellow.
- Thanks to Duo V2 on the Unstable Diffusion discord for helping me get to the bottom of this issue.
VAE: vae-ft-mse-840000-ema-pruned.safetensors
- link - https://huggingface.co/stabilityai/sd-vae-ft-mse-original/blob/main/vae-ft-mse-840000-ema-pruned.safetensors
- This is already baked into the model but it never hurts to have VAE installed.
- Under Settings -> Stable Diffusion -> SD VAE -> select the VAE you installed via dropdown. Then, uncheck Ignore selected VAE for stable diffusion checkpoints that have their own .vae.pit next to them
Clip skip : 2
- This varies. Most of the time Clip skip = 2 works best with this model. In the event you're not getting the results you want. First, try Clip skip = 1.
ETA Noise Seed Delta: 31337
- Found in - Settings -> Sampler parameters -> Eta noise seed delta
Sigma Noise: 1
Sigma Churn: 0 or 1
- Optional - When using Euler, Heun, DPM2 samplers try setting Sigma Churn = 1
- Found in - Settings -> Sampler parameters -> sigma churn
Optional Negative Textual Inversion (TI): bad_prompt_version2
- link - https://huggingface.co/datasets/Nerfgun3/bad_prompt/blob/main/bad_prompt_version2.pt
- Install to - stable-diffusion-webui -> embeddings
- In webui - Add (bad_prompt_version2:0.8) at the end of your negative prompt.
Optional Recommended Samplers:
- DPM++ SDE Karras // 18-35 steps
- Euler // 40 - 80 steps // Sigma Churn : 1
- DPM++ 2M Karras // 40 - 70 steps
- DPM++ 2S a Karras // 30 - 75 steps
- Heun // 20 - 30 steps // Sigma Churn : 1
- DPM2 // 30 - 75 steps // Sigma Churn : 1
- These are just recommendations; feel free to experiment with different values and samplers.
Optional Hires. Fix settings (these are my go-to parameters):
- Upscaler : R-ESRGAN 4x+
- Denoising strength: 0.3 - 0.35
- The rest of the settings are up to you. They don't really impact the quality of the output.
- Note: Hires Steps, if you're using high steps for SD - You can choose a hires step value lower than your SD step value. This will increase the generation times.
  - For example; Let's say you're using Euler sampler @ 60 steps. You can then set the Hires Steps to ~40. Apposed to the default which is 0. Hires Steps = 0 means it will follow the same step value as sampler (Euler in this case). Lower Hires Step values will reduce generation time.
Optional Face Restoration:
- I use CODEFORMER @ 0.8 strength. Whether or not you use face restoration is up to you.
Optional Quick Settings:
- For easier access to some of the settings in webui, you can move some settings sliders/dropdowns to the main interface (beside model selection).
- Quick settings location -
  - Settings -> User interface -> Quicksettings list
- My Quick settings -
  - sd_model_checkpoint, CLIP_stop_at_last_layers, s_churn
  - Where:
    - CLIP_stop_at_last_layers is Clip Skip
    - s_churn is sigma churn