Where do I find this option?
Thanks for the detailed response, I think I have all that covered. I actually found the uv maps in the UE4 software, somewhere…hahaha…now where did they go. 
I pretty much have everything cranked to the max, I’m thinking night scenes are a little tougher to get close to Vray quality and also my material building in UE4 is rudimentary at the moment.
I’ll keep plugin away, fortunately I know a few render engines already so something’s translate to UE4.