[Bug]: identical settings/seed yet changed output between webui restarts

[Enferlain]

Is there an existing issue for this?

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

What happened?

I noticed ever since I started using local that the images that I save to use hires fix on, when I go back to do them look different than the original ones I saved, and I can't figure out the behavior.

I haven't changed any of my settings, and I'm not even sure if I'm doing anything between the same seeds randomly changing output, but in the last experience I know for a fact that I restart the webui and the image I get now looks different.

I have these related settings enabled

Stable Diffusion

Enable quantization in K samplers for sharper and cleaner results. This may change existing seeds

Make K-diffusion samplers produce same images in a batch as when making a single image

Random number generator: NV

Optimizations

Cross attention otpimization: InvokeAI

Pad prompt/negative prompt to be same length
 
Persistent cond cache
 
Batch cond/uncond

This is on an 6800XT on linux. From what I can tell, it doesn't happen every time with every image, but not sure. Maybe there is some known issue or it's amd related or something. I used colab before with t4 and that never happened there, no matter how many times I restarted it was awlays the same image with identical settings.

Steps to reproduce the problem

1. start webui, gen some images or run some xyz.
2. close webui and then start it again
3. generate with the same settings and seed and have different outputs.

before -> after

What should have happened?

Same image result across every restart

Sysinfo

sysinfo-2023-09-19-20-02.txt

What browsers do you use to access the UI ?

Google Chrome

Console logs

There is no related log

Additional information

No response

[FilipeF12]

seen that too. almost as if some code is pulling randomness from the browser.

[Enferlain]

Possibly related #13473