Started playing Halo Master Chief Collection (Digital Download) on my XBoxOne S, Halo Reach & CE loaded fine but game crashes when i want to load Halo 2/3/4 saves

Is that because of the XBox One S being too 'weak'? Or because it's a Digital download?

My Xbox One S sits at 80% space used

And now i'm considering getting the disk but wanted to ask first, if it's a Digital download thing or if it's the console.