i’ve been having the same problem with MBDN. So i googled the problem and stumbled across this forum. Something you (Remo) said stood out to me – MBDN worked fine on a clip in the browser, but not in the timeline. So I created a new timeline, copied my clip into it, and applied the effect – perfection. however, when i tried to bring the clip back to its original timeline, no luck. So i returned to the timeline in which denoiser was working and nested the clip. When i brought the nested clip into my original timeline, it worked perfectly. Sucks to have to do a workaround, but denoiser does a great job – good to know there is a fix that is working for me. hopefully it will do the same for you.