Wow thanks for the input guys. @Astaraa @MostHost_LA @Mind-Brain Going to take me a while to work through these suggestions, but I will come back at some point. So little time after day job, I am sure you all have same problem with that, or at least have done in the past.
Plus still feeling new to Unreal ( a year or so on) and lots of virgin concepts / terminology to get my head around. MPC? WPO?
On top of all that I have a new problem where LGT is just crashing the project as it comes to the end of the load procedure. And I think Procedural Foliage was crashing on using re-simulate. Most annoying. Think it is time to invest in Source Control.
Anyway again, will come back on your comments as soon as possible. Thanks