Tiling problems, bercon + multitexture

[ali_cgi]

Hi I am having some problems creating a tiled wall image, mosaic style bathroom tiles,
I am using bercontile and multitexture with lots of different single tile images, all on random rotation and slightly different offsets + displacement with gradient randomised.
I am seeing strange lines in my render which appear different at different resolutions,
Is this some kind of moire effect or optical illusion, if so how do i remove it? Be great to get some tips on this,
Please see attached image.

[Svetlozar Draganov]

Try to increase Image Sampler settings a bit - if there is no improvement it is moire (d)effect.
Different Image Filters may help to reduce that unwanted result but none of them will resolve it completely.

More information about image filters and moire effects could be found here:
http://docs.chaosgroup.com/pages/vie...ndMoireEffects