White lines or flickers on a landscape

Hi guys do you know how to fix this problem on a landscape, as you can see in the video below, when i move the camera around my landscape is kinda making some kind of a hollow points on a landscape or something like that…
I tried increasing lod 0 screen size from 0.5 to 1 and 0.8 but the problem still persists.

https://www.youtube.com/watch?v=4f0daSSMY-4

I don’t even see the issue (off mobile, probably why).

Generally you dont use a landscape for the border skirts, because it looks empty and unfinished.

What you can do - depending on lighting mode - is to make a nice scene, screenshot it, and generate a cube map to use for rendering fake distante areas ghe player cannot reach.

Or, you can dress the scene up with high quality well pefroming distant lod billboard foliage.

Then - because the player never hits these zone, you also normally convert it to a mesh, and thus gain a bunch of performance back.

You probably want to just ditch the landscape altogether anyway, performance is better spent elsewhere…