Sampler and Scheduler Guide
Most people can leave the image generator's Sampler section at its model defaults. Change these controls when you have a clear problem to solve and a baseline image to compare against.
What the controls mean
| Control | Effect | First adjustment to try |
|---|---|---|
| Seed | Sets the starting noise. It helps you compare variations with other settings held steady. | Turn on Use Fixed Seed before changing a single setting. |
| Sampler Steps | Sets how many denoising steps run. More steps take longer and do not always improve the image. | Return to the model default; then adjust gradually. |
| Prompt Guidance | Controls how strongly the sampling follows the prompt in supported workflows. Very high values may hurt quality. | Change it slightly, then compare with the same seed. |
| Sampler | Chooses the sampling algorithm. It can change the look of an image. | Try one alternative offered by your selected model. |
| Scheduler | Controls how the sampling steps are distributed. | Keep the sampler fixed when testing a new scheduler. |
These terms describe the underlying ComfyUI KSampler controls. Dopamine Girl exposes only the controls supported by the chosen model; some models use different sampling workflows.
Compare settings without guessing
- Generate a baseline with the default sampler and scheduler. Save the result or keep it open.
- Enable Use Fixed Seed and record the seed, model, checkpoint, dimensions, prompt, and steps.
- Change only the sampler or scheduler and generate again.
- Compare the subject, composition, artifacts, and time taken. Keep the better setting or return to the default.
There is no universally best sampler and scheduler pair. A combination that helps one checkpoint, prompt, or step count may look worse with another. The current choices in the generator are the ones you can actually submit.
If the result ignores the subject, first improve the prompt. If an image-to-image result changes too little or too much, adjust its Creativity control before experimenting with samplers. In ComfyUI image-to-image workflows, the related denoise value controls how much of the source structure is preserved: lower values preserve more and higher values change more. See the official ComfyUI image-to-image explanation. Dopamine Girl's control is presented as Creativity, so use its visible scale rather than entering ComfyUI's raw denoise numbers.