LightMix and Denoise

In beta Sept 5 2017 denoising seems not to work in Lightmix Multipass. can it also be activated in lightmix? In lightselect is properly activated.
I attach an example: of the two images I prefer the lightmix, but I can not use it because it has a lot of noise. How could I fix it?

Build 5 sept 2017 and Cinema 4d R18 in MacOs Sierra

Sorry for my bad English.