Mesh with texture atlas is "sparkling"

Hello everyone. I have made my game's 2d terrain with programmatically generated mesh and added texture to it from texture atlas with uv's. The problem is, that my mesh is "sparkling" (small stripes of other atlas image taken and added to the triangle texture). It is just a stripe of one pixel at the bottom of the rectangle. In unity 4, when chosen texture filter mode of "point" I had overcome this problem, but until I installed unity 5. After that, this problem revived and changing filter mode to point does not help. How can I solve this problem? See picture below!

That blue stripes are the problem! Thanks.