I ran into an issue where there seems to be some interference between framebuffers -
when I render individual framebuffers it’s fine, but when I render a lot of them at once, artefacts show up. (looks a bit like jpeg noise) I narrowed it down to the ‘check contrast on all framebuffers’ option, in the framebuffer tab, which is on by default. turning it off makes the artefacts go away, but the sampling quality is much lower. I cant recall this happening before, and wonder if its somehow related to unified sampling ? any pointers, other than not using mental ray?

