Go ahead and check the patch notes for background.
Apologies if I am being an idiot but where is the 4GB coming from? There is nothing new being added besides bug fixes so why am I downloading a 4GB patch?
Where did the 4GB come from?
@i-sim-l
Here's a, hopefully, helpful quote for you:
"When we apply fixes to one little thing we sometimes have to fix a whole chunk of things that it affects around it. That 4GB is not an addition to your download, but a replacement to a chunk of existing things.
Any fix will require replacement of larger things to make sure the fix works with everything it needs to and we don't just force it in and bork something else. We are not adding 4gb to your game size. We are altering maybe 3.5GB worth of existing data and adding a small amount for new things/fixes."
@i-sim-l
as @xshirahx already stated the download size does not mean that 4 GB gets added to the install size of the game.
any piece of software is compiled from usually hundreds or thousands of files these files reference eachother, like so called class libraries.
when one of the constituants of such a class library gets changed, to fix a bug for instance, that whole library has to be recompiled.
referencing to updates, this would mean that all libraries that contain changes would have to be shared with us, the players.
this could mean that the update/patch size can be any size depending on how many pieces of the software have been touched, however on your pc the changed compiled code would replace the old compiled code.
and it could even mean that your install size becomes smaller if they made optimisations for instance which could mean 100 lines of code became 10 lines of code.
