Thanks for your reply, I am reconsidering level steaming, I am testing a hex map with a 400x400 grid with 150 units(all static meshes) and 2 factions using imposters and not seeing any problems. I am gonna try increasing grid size, units and factions this weekend.
Here is link to vid and plugin:
Link for 4.22 fix :
There is a problem when scaling the static mesh, the imposter is not scaling properly, Checking into this, hopefully there is a fix soon !.
Found that very interesting, giving me lots of ideas…