I worked a bit with displacement cliffs for my map and I encountered a weird and ugly lightning bug http://i.imgur.com/9CymEcz.jpg. The displacements are also sewed and I dont really know how fix this. Even after reworking the whole cliff around 3 times I still ended up with this. The upper texture is blendgroundtograss007_reducedetail and the lower one is blendrockgroundwallforest_reducedetail. Both have the same texture settings. Might be nice if someone could tell me whats wrong.