Can't undersand.

Why this thing happens:


Why there is a so detailed terrain so far away? It usually happens near the terrain edges, though I not quite sure about it.
Tiles that are actually near camera are represented with correct lod.

This is 1k*1k version of my terrain:

That should'n give that...
if you delete the info.cfg of your map and reload it, it still gives that ?

Well, I removed .info file and solved this problem.
What was the actual reason then?
Great thanks, anyway.

info.cfg is there to cache complex lod calculations and save times when loading tiles. Therefore you were seeing LOD of previous map you loaded with the same config file.

If you change a heightmap externally of PLSM2, it will still use it the previous cache...