@johnmiceterNo, it’s not related heavily to the SSD. I understand that you would think that tho.
Best example I can give off the top of my head is Winrar. If you have a .iso, .rar or any compressed extention file, you know the actual file is usually alot larger. When downloading this file... lets say it’s 500MB and it goes ‘boom done hun’ in 5 mins. You still have to unpack. The unpacking is usually the longest part (depending on size and your download speed when you were downloading the thing), cause it’s from an outsize source. Lets say the actual file is 3GB. It first has to unpack the data, then process it, run the file, install the content, verify that it works internally and presto, you have the files on your computer.
This is in stark contrast to just downloading a file you can instantly run (which you would think a game would do).
But in terms of updating, it’s basically the same process as the former but looking at individual files and replacing them. Just like when you have to match duplicate work files with each other and you have to sift them from a large pile xD.
Hope I cleared some of it up. It’s just the ps version of doing everything. Will they change the process? They might, but for now I don’t see it.