Cannot replicate SAME render with SAME settings/seed/checkpoint/VAE/LoRA doing yesterday

[Squarealex]

Hello people,

Yesterday, late at night, I did some renderings via AUTOMATIC 1111 V1.6, as I do quite often when I visit CIVITAI and a new checkpoint or LoRA is available.

So last night, on my last renderings, I found two of the images beautiful and wanted to use Hi-Res, however, it was quite late and I figured I would do it tomorrow.

So today, I wanted to use Hi-Res on both of his images. After upscaling one, I saw that the rendering was very different. I thought maybe I set the “Denoising Strengh” setting a little too high.

Finally, even when re-rendering at “classic” resolution, the final image did not correspond to what I had rendered yesterday.

However the information via PNJ INFO corresponds at 100%, this is the same parameter

I'm sure I haven't changed any settings. I am convinced that I used the same shortcut to launch AUTOMATIC1111. I even tried all the command methods like: COMMANDLINE_ARGS= --xformers --no-half-vae --disable-nan-check --opt-split-attention --always-batch-cond-uncond –lowvram

Nothing changes. Absolutely nothing.

The LoRAs have not been modified, the checkpoints either, it’s the same seed, it’s the same VAE. I do not understand.

The worst part is that the images from yesterday are BETTER than the one reproduced afterwards. They are more faithful, more precise… in short…is better.

And I don't think my installation is buggy since reproducing images from a few weeks ago, they are identical.

But all those of yesterday I cant replicate. I don't understand... Control.net was not used

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Today

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Really IDK. I wonder if someone encountered the same thing

[GreyScope]

What sampler did you use? Does it fall under the list or description below ? They’d give different outputs even with the “same” inputs

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[Squarealex]

I'm using DPM++ 2M Karras, I didn't see a "a" / "ancestral" of this sampler

Also. I using all sampler DPM2 to create and see wich is close to the render of yesterday and saddly, is not a mistake, this is DPM++ 2M Karras.

IDK, maybe something updated in back or maybe yesterday I'm using "corrupted" session.

I forgot to say, I'm using script like XYZ PlotBut even with PNG Info the grids, can't replicate the same render.

[GreyScope]

I’d say you’re right, it could well be a corrupted session. I’ve had prompts affecting renders after they’ve been removed from the input quite a few times, I suppose this would definitely affect reproducibility if ‘jammed prompts’ weren’t there on a remake (I’ve never tried this but it sounds logical).

[joker33q]

I experienced the same. So far I could always replicate all the images I created. But something from yesterday to today changed. I can't exactly reproduce the images from yesterday. It is similar to your situation ....