What are the disadvantages of game sharing?
The process comes with a few risks. Your friend will be able to make purchases through your account on the Xbox Store, so be careful about what information you save on your account. We highly recommend you only set up gamesharing with a trusted friend or family member.
Is it a good idea to game share?
There is a downside here — if you decide to re-enable console sharing on your own PS5, it will automatically be disabled on your friend's console, and your friend will not be able to play the games from your PSN account.
What are the downsides of game share on PS5?
This includes any file downloading/sharing, messaging or similar programs - they can result in both ping lag and packet loss during online games. If you check with others on the server and they're also experiencing the same problem, the server is to blame and you may need to find another server or wait it out.