Not sure if this is the right spot...but I was playing the game, fully installed and updated. Suddenly my power blinked for like...literally 1 second but enough to shut my PS4 off.

No biggie I get the system back up and running, log back into the game....only for it to tell me it is doing a FIRST time install??? Seriously?? Why would this happen, does it happen often?? Can I avoid this in the future? I really wanted to play today but probably won't be able to any time soon, my internet is slow. Currently waitig at 659 minutes until done.

Any advice or help on the situation??