EDIT: Found the solution. Leave it in case someone has the same problem.

Solution: I wasn’t using the right VAE. The image would load something called taed (or similar) and changing it to taedxl fixed it.

The idea came from the similar style my images where getting. I thought maybe the decoding from the latent space was misunderstanding something and producing that brush-like style.

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I copied from liblib.ai a workflow to test my newly installed comfyui with my new GPU (4060 16Gb). The original image is this one:

Original pic from liblib

But I get this one:

My result.

I tried with a couple of the images using that same model and all of them result in the same style of image (Brush paints in blue and green tones).

The model I'm using is here: https://www.liblib.art/modelinfo/506c46c91b294710940bd4b183f3ecd7