Close to you is loaded landscape, past that line would be unloaded landscape, they are out of sync.
I don’t know if landscape has its own HLOD thing going on seperate to build HLODs, I did assume so because landscapes always seen on a map with no HLODs built
I wonder if build HLODs does anything to it
Maybe related to your landscape collision issues ???
If you find each landscape tiles UASSET file & copy them somewhere else with file explorer…
Would deleting the landscape tiles and pasting the copied UASSET files back into the outliner, force it to rebuild something ???
Thats a big job though, I accidently deleted a landscape tile once and had to go back to a previous version, find the UASSET, save it somewhere, restore latest snapshot and then pasted it in.
Not so bad with 1 tile, but a 8x8 grid of tiles is 64 files to find.
A simpler thing to try could be to delete the landscape tiles then use undo to bring them back, I just tried it on a landscape tile and it does calculate something when you undo the deletion.
Only try if your confident with windows file explorer and have a snapshot to fall back on if it goes funny.
Ive noticed this occur randomly on some landscapes in my game aswell. They get grid lines drawn on them similar to the built in GridPlane blueprint whose grid lines match the fortnite grid. Same thing basically happens here, but on a landscape, for no discernible reason at all.
