I use Unreal Engine to make games … not ArchViz, not composing. Hence in my instance it is useless. My point is and has always been that this should be identified on the marketplace as not designed for large maps and not optomised for games … if that had been stated then I would never have bought it.
The only thing you can learn from this is how NOT to make a landscape material for a game … so your point is moot because in my case it is a useless asset and will never be used.