I did a right click on Hannes's Flame setup and made it a tgo to transfer to another tgd. That did fine for probably 8 renders, then after C&C I changed the scale first only on the card and got the junk. Applied scale to image next, same junk. So.....at this point I have increased ray detail multiplier to 1, ray detail region highest 360, anythng else I can think of ......changes at scale of 1....fine and dandy. Changes at increase scale...marbling.
Atmo now at 1 and quality 64. No clouds. Sun elev 2, strength 0.5
I now have a Sun, 2 light sources and 1 spot. I wonder if limiting distance has a play.....
Marbling is not just on the people, it is on fence, bench as well, looking like a fine displacement where there is none. It is like the mask or alpha is projecting outside the card maybe?