Hello
I'm trying to render a quick animation, so settings are pretty low. I'm using Direct Lighting with an HDRI background image only to light the scene. There is a mud river object and a terrain used as a mate object, as the river needs to be comped over a real footage later.
I'm noticing big "light" stains flickering on my mate object (which is invisible but leaves some traces in the alpha, such a shadows) Mate object is using a diffuse material.
I was using adaptive sampling, should It be disabled for animation? Coherent ratio is at zero.
Thank you