Yes, its working , but still applied your fix
RT_PixelAttribsA_Casc0.SampleRenderTargetValue(float2(CascPosX[0], CascPosY[0]), 0.0f, SampleValues[0]);
@ Deathrey
Default plane size is set to 1.0, when experimenting with bigger size to fill whole map waves are not as good looking, so Ive placed few planes on the map together, they overlap nicely. Would there be better or more efficient way of achieving same result but covering whole map? Current size is set to 50.0 and i adjusted some params to have slightly smaller waves. Thank you