displacement problems

[kpavlov]

What settings do I have to correct so I dont get this noise on displaced wall. My settings are already high for iradiance map.

[Morbid Angel]

it would help to know your displacement settings first.

[kpavlov]

The problem is not in displacement becouse it renders ok when you are close to it, but in GI settings. Its like it doesnt have enouph rays so I get darker parts and it looks like noise.

2d displacement settings:

resolution 1111
precision 12