V4 Image Generation Not Working Properly

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Until recently, Firefly v4 handled visual intensity very well: low settings produced natural, realistic images, that appeared as if photographed casually with a regular camera, and higher settings introduced more controlled polish making the pictures look more professionally photographed. This week it stopped working. At low visual intensity, the outputs now appear grimy, artifact-filled, and visually unpleasant, often with a strange hdr filter look, rather than subtly styled.

Meanwhile, there seems to be no spectrum of variation, because even around 70% intensity, the model often produces results that look like maximum visual intensity, overly polished and unnatural. The nuanced control that v4 previously offered seems to have disappeared. Is this a known issue internally, and is it being addressed?