Why did we use the compositor for denoising instead of any of the render denoisers? Is one better or faster than the other? Non-destructive? Personal preference?
Optix is way faster and looks really good too - I think it's a bit too dark at lower sample counts but the speed can certainly make up for that. At the moment none of the denoisers are temporally stable, so just go with whatever either looks best or is fastest depending on what you need.
I'm not entirely sure, but I believe for animation we can check the "Experimental" in the GPU setting for cycles, then click this button under the Advanced tab.
It randomizes the noise, which makes it less noticeable over 24fps or more.
But again, I'm not entirely sure this is correct. 
spikeyxxx could probably let us know :)
Hi Nathalia nathitappan ,
That is absolutely correct!
That clock icon changes the distribution of the Samples per frame, thus varying the noise pattern (a bit like how film grain changes per frame).
(It does not remove any noise, it is not a denoiser.)
Cool! I'm glad I had that right, I wasn't sure if it was like a placebo effect to me, cause while not denoising it does feel like it make the noise on my animations a tad better (in fact, some noise is always wanted right? I add noise to my compositions in after effects pretty much on auto pilot at this point lol).
