Is there an existing issue for this?

• I have searched the existing issues and checked the recent builds/commits

What would your feature do ?

Sometimes, i get the feeling that diffusion is going in the right direction, preview images are good for a few steps, then some steps later the preview is completely unrecognizable. That is quite disturbing. I believe the sheduled step is too high, and that it crushes the current latents. Therefore, I would like to run diffusion step by step, recording latents in the meantime, in order to be able to come back to an earlier version and altering the scheduling (lowering its value dynamically) in order to better control the diffusion process.

Proposed workflow

1. Go to img2img
2. activate "1-step diffusion" option
3. click "run 1-step" ... n times
4. if needed, adjust diffusion parameters (CFG, denoising strength, ?scheduler?, prompt, ...)
5. continue until the end or until user decides to stop.

Additional information

Relevant (same subject) discussion "image Generate debugger" proposed by @aifartist : #3396

Issue showing sometimes (last image) the step is not optimal, even undesirable : #3483

Here, sometimes the preview images do not change much and it could be desireable to effectively stop generation earlier : #2472

Further discussion about steps in general : #1113 (comment)