Like I said in the PSA, the 1.7gb files refers pretty much to the client itself, if you read a bit below it you can tell the game itself will be something from 10 to 50gb which we still don't know (PS4 not sure about PC). And like a few said here, I'm sure we'll have to download the 1.7gb client but in-client might ask us to download an even bigger file like we were downloading a patch.