iOS Landscape Nightmare

For days now I am trying to setup a large landscape environment for iOS. Even though the landscape looks as intended on the Mobile Preview, when I actually run my Level on my device (6 Plus) I have several issues (also have a look at the attached photos)

  1. Layer blending. My landscape has three texture layers, but on the device they don’t seamlessly blend, but you can see big squares of one or the other texture.
  2. In my material I have incorporated the technique to scale the texture up based on distance, in order to get rid of repetitive patterns in the far distance. Again, it works on the mobile preview but not on the device.

I’ve made sure that all the following are true:

  1. My project’s target hardware is Mobile
  2. My Material has less than 5 textures and has used for landscape, use with static lighting checked. It is fully rough. Use Lightmap Directionally is unchecked.
  3. My textures are rectangular 1024 X 1024
  4. Lighting has been built
  5. Device profile config files has been set in the Config Directory

Additional Info

  1. I am running 4.7.6 on OS X Yosemite
  2. My layers are imported from height maps

I have upload a test scene if you want to review it and let me know what am I doing wrong