Using Denoise In v1.6.0, I notice no noticeable effect of the “Original detail” slider.
This feature worked well in v1.4.x, noticeably suppressing noise reduction in areas of high local contrast. I have not tested 1.5.x.
Win 11, NVIDIA GeForce RTX 4060, Core i5 13500KF.
Attempted fixes: reboot; close other apps; reinstall; repair installation; update Nvidia drivers to latest Studio.