Take a Look At Your Primary and Secondary DNS
This has been a go to method for many gamers who are struggling with long download speeds. There are tons of tutorials floating around on how to do this and it’s a relatively easy fix that can yield solid results if you’re still living in a dark world where your PS4 still displays 99+ hours for your download time. Start by accessing your PS4’s Settings menu and then select Network. Select Set Up Internet Connection and choose which ever option applies to when it asks for you to choose WiFi or LAN Cable. Now here is where you should deviate from the beaten path. Instead of selecting Easy for your setup option, go to Custom and select Manual for IP Address Settings. On the next screen you will see Primary DNS and Secondary DNS towards the bottom of the menu. You will change these to Google’s DNS.
Primary DNS: 8.8.8.8
Secondary DNS: 8.8.4.4
Of course, it will be up to you to fill in the rest of the settings here with your own information so make sure you have the rest of the information that this menu is asking for or at least know where you can find it.