I have been backing up PS2 games for a wile now. But when I back up a game, after 2 weeks or more the game doesn’t work anymore. When I first back them up they work fine, but after a wile the quality starts to deteriorate and there are faults in the game, like the music stops or some objects don’t have textures on them. Then after a wile the game doesn’t work at all. Could someone tell me why this happens please?