Quote - Yes, but this is a completely different issue.
i wonder, as I allways use displacement maps and never had this?

Bump is fake, so I put displacement maps in.

Displacement maps combined with procedural displacement from turbulence and grantite node.
Stirred; not shaken, => with some blenders that is :-)

Never had anything like this..

As I asked others earlier, what resolution did you render at? I made dozens of test renders at screenshot size (~1200 x 1000), and never noticed a thing. But at final render resolution (`4800 x 4000), it showed up heavily. Also, a high min shading rate eliminates the issue, too. But that's not a useful fix. > Quote - moriador, never bigger than 2400, that's maybe why I'm not seeing it. But would make a real odd bug. I had a render going all day, when I get a chance I'll see if I can do the same. Not sure my machine can handle a render that big though.

Yeah, with emitter light, it seems to eat RAM, at least on my system. FFrenderexe used over 6GB of memory to render the simple, bald, nude, unmapped M4 in a sphere. I think I may want to reduce those huge TIFFs that the product uses.

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PoserPro 2014, PS CS5.5 Ext, Nikon D300. Win 8, i7-4770 @ 3.4 GHz, AMD Radeon 8570, 12 GB RAM.