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..

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!