False Resolution in Firefly

Not sure why, but the images I get in Firefly are far from 2k pixels and they look like they are already upscaled from 800 pixels to 2k with a bad algoritam. When I try to upscale 2k images, they look very bad and you can see that they have already been internaly upscaled. This wasn't the case with the images when Firefly started, so it is obviously some kind of saving excercise. The images produced by Firefly today are by my opinion completely unusable for any kind of print turning Firefly to a toy instead of a tool.