I don’t know if this problem is still relevant? I just checked it a little and it works fine. I put downloaded files in the:
\AppData\Roaming\McNeel\Rhinoceros\6.0\Plug-ins\Denoise Raytraced (faede54a-4082-46f4-80b0-0bc9cc5069c3)\settings\
Then just run the command DenoiseRaytraced
Spaces in the paths are still not working 
Nice stuff indeed.
A lot is going on in the rendering area, but I feel like many things are deeply in the WIP state or hidden somewhere. Since some time ago I decided to move out from V-ray, I would really like to see all that stuff that @nathanletwory is working on, a little more available to users.
Well, maybe not everything at once, but every couple of months another more or less “ready to work” tool.
very simple test, 200 passes:
