Had a weird problem with Dirt 5 that doesn't seem to make much sense. I put the disc in and it installs 46.5GB from disc and downloads a 4.7GB update, all well and good but the storage screen reports that the game is taking up 20.75GB of space, very strange. I deleted the game and reinstalled it and it did the same thing again. However this time I noticed the first progress bar showing amount of data required to play the game for the first 19GB filled up as it should, then it installed the update and carried on installing the rest from disc but the second progress bar didn't fill in at all.
I then deleted the game again, pulled my ethernet cable and let it install offline. It installed the full 46.5GB no problem and then I plugged ethernet back in and let it do the update. It's now taking up 47GB which sounds a bit more like it. There's obviously quite a big problem there somewhere but I'm not sure if it's related to the OS or the Dirt 5 update. Either way I think I'll be installing all discs offline from now on then letting it do the update after.