Full game download even with game disc?

I just got the Xbox version of this game today and I will need to wait to play. The game disc holds no data other then proof of purchase. I figured the disc would hold at least some of the games data to help combat internet usage on the download servers. This is not the case I need to download the entire game even with the disc. I’m really disappointed that this is the case I guess with my slow internet connection I will need to wait until tomorrow to play. If there is anything I may be missing please comment and let me know.