That's weird because the 360 emulation played it from the disk just fine ;)
It downloads the entire game for each disk game you put in, seems to me that the could've found a more efficient way to actually do that since you know both the 360 and the XboxOne support installing games from disk so they got the ability to create a disk image.
If all they needed to download is an emulator and a compatibility config file that would've been a much smaller download package..
