Tessellation is rapid flickering

Standard displacement node setup with PN Triangle tessellation. There are no duplicates near by, this is the only plane with tessellation in this world.- YouTube

Thats occlusion causing it.
the tessellation is probably far above the bound of the item, so the engine tries to occlude it thinking it should not be visible.

Also, thanks because I have the same issue on landscape and couldn’t figure out what it was… tessellation is too high.