Banding with IPP2 Gamut Mapping in RCM

I've noticed that R15's implementation of the IPP2 gamut mapping in Resolve color management can cause banding in the image.

I was testing it out and was noticing some weird behavior in the image that I do not see when using the RCX generated LUTs.

RCM:


LUT:


R3D decoding is set to 16 bits, full res premium. Performance mode off. Tetrahedral LUT interpolation, but using RCM it should not affect the results.

[Peter Chamberlain]

Can you post a link to your images, and you system details?

Peter

I reached out directly to support via email, but here is a dropbox folder with the images as well as a DRP showing the artifacts very clearly. There are also resolve logs there as well.

https://www.dropbox.com/sh/1qg504bf3v53 ... g3usa?dl=0

[Peter Chamberlain]

Thanks