Its no secret that Days Gone is a huge game, Taking up around 60GB of valuable real estate on your PS4 HDD. I'm unsure as to exactly what changes have been made to the game to enable such a decrease in file size however one would assume it's simply from general optimizations?
We voted Days Gone as one of the best games of 2019 and would highly recommend picking.it up if you haven't already. Bend Studios dedication to continued support for this game needs recognition. A lot of players agreed upon release that the game was fantastic, only to be ruined by game breaking bugs, game breaking bugs that although I didn't personally experience, seemed to affect a large portion of the player base. Such bugs seem to have been all but eradicated from the game through patches and fixes since the games release.
You can check out our full review of Days Gone here!
Here's a full list of the rest of the fixes implemented in Days Gone Patch 1.61:
The mission “Better to Light One Candle” bounty should be able to be obtained properly
General optimization towards certain missions
Scoring will properly apply when utilizing oxygen tanks in the “Reloaded” Challenge
The mission “The Anarchist Spy” will properly reset traps if you fail the mission
The mission “Out of Nowhere” helicopter’s light has been fixed.
General optimization prior to playing before the game fully downloads
It may be time to once again jump in and play Days Gone, or at the very least download the update and free up some space on your HDD.