I used my friend's PSN account to download and install a game on my own PS4. However, my friend does not want me to mark his account as "primary" on my PS4 so I can play the game while he's online on his own PS4.
I want to buy this game on my own PSN account so I can play it while he's using his own PS4, but I have a poor Internet connection and it would take a long time for me to download the game again. Do I have to download the game again if I play it using a different account?
61 Answer
If you download a game on your PS4, you download the same version of the game no matter what account you use, and the game is downloaded to the system. So if you already have the game downloaded, you can play it using any PSN account that has a license to play the game and don't have to download it again when switching accounts.
Note that it's possible, depending on how you have your PS4 configured, that your progress you made on your friend's account won't carry over to your account. It depends on how the game manages progress and whether the progress is device bound, account bound or both.
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