Are you making an attempt to put in the sport from a disc? If that’s the case, then it could have put in the whole lot from the web that it will possibly and is making an attempt to put in the remainder from the disc however it’s having issues studying the disc to do this.
For any sport that you’ve a problem putting in with a disc, you’ll be able to all the time do a full digital sport set up from the Xbox retailer web page in case you are on-line. That approach you do not have to really do a partial set up from the disc and the remainder on-line.
With the disc within the drive, cancel any set up which may be happening. Then go to the shop and seek for the sport there. It ought to provide the choice to put in the sport on that web page since your console reveals to have a license for it.
Hopefully that set up will full for you with out stopping on the 51% that you’re seeing.