Hi Danijel,
I've tweaked a lot the "musical noise" and the "whitening" stuff in advanced mode that correspond to the smooth command... Strangely when I raise the musical noise there is a limit where the artifacts begin... My other bet was the treshold because of what I said that the reminiscence of the noise is dynamics related... Maybe there isn't much I can do anymore and it's better to leave a little noise...
Uncle Bob, I know small bits are better... But the othe benefits of Rx denoiser is that it erases tonal and broadband noise at the same time precisely my case here. I think I'm fighting a computer vent...