Objects changing when moving camera closer

[Apollo-VFX]

Hi there,
I have a problem.
I’m building a scene in a cave for some cinematics.
But when i add either foliage or manually add fern to my scene they act weird when i move my camera or just my viewport camera.
It might be a LOD problem, but for as far as I know it only has 1 LOD (LOD 0).
I’ve made a small clip of the problem right here;

Unreal Problem

Please help!
Gr,
Apollo

[YuuJin]

looks like lods, have you checked these in your mesh?