Why are landscape edges flickering with World Composition?

Hi,
I’m currently using World Composition and I have a little irritating bug. When I’m moving camera landscape edges are flickering… You can see this on below video:

You should watching this in HD.

Anyone could help me?

Wishes,

It looks like that seams between landscape components caused by texture streaming (heightmap) and landscape LOD. This is a known issue and we are working on resolving this. You can just ignore this for now, in 4.5 version it should be fixed.