Soldato
Go manually download Seattle and you’ll find it’s around 10gb ;P
The entire game is 2 petrabytes
But that's irrelevant if the game doesn't load that much automatically. I just flew around Seattle again for an hour - only downloaded another 500Mb, even with my fiddling with the graphics settings from Medium to Ultra.
You made it sound like the game would try and download 10GB and be unplayable until it had done so which just isn't the case at all and never was going to be.