Btw, SVOGI in cryengine seems like to provide some larger scale AO that works really good for trees and such without actually applying that much AO to small objects and everything in the world. (See the gif below)
://docs.cryengine/download/attachments/19377157/forest2.gif?version=1&modificationDate=1434107474000&api=v2
I don’t really have much information about it since I haven’t been using it for a long while. But is there some sort of thing to do in UE4 as well? (Asking is better since I don’t have the VXAO atm as well)