there's two issues i see if you have landscape tiles. i'm getting a weird bumpmap seam between the tiles and the other issue is more of an unreal issue.. the tiles don't lod in exact synch and thus you can start getting micro holes between your terrains as one terrain is loding faster than the other and thus their verts aren't matching identically.

has anyone solved these? i could slightly overlap the terrains to hide the micro holes, but that doesn't seem like it's the correct thing to do. i'm curious how epic deals with this issue as they should be seeing it as well?