Hey all;
I painted some mega scans grass down into my open world level.
When I look directly at the grass or from certain angles it disappears.
The white line shown on the left if the open world grid.
Please see the attached animated gif.
Any time help is greatly appreciated
Yeah!
Tell me how is going 
Turns out I just had to ad LODs to my Folliage. I was hitting some upper limit in instances. BUT I needed to add lods anyways so it works out
Waite. Almost had it.
That got me farther along. But I am still hitting an eventual upper limit of where too many grass instances and it disappears.
Tried both
r.Raytracing.Geometry.InstancedStaticMeshes.Culling 0
foliage.forceLOD 0
and no luck yet.
I seem to be hitting some limit on how many polygons I can have of a single foliage on screen
Just tried Enable World Offset and no go
SOLUTION
Ah, thank you! It was MaxTriangles for me.
