The sounds looks a lot more visible than it had been on a Denoise DNG? Or perhaps the take out repair continues to be somewhat noisy on any Denoised file, whether or not it had been a DNG or not? I’m not quite absolutely sure That which you’re observing, but https://www.nathanisoconsulting.com/blog/why-iso-20000-certification-is-essential-for-it-service-providers-in-uae/