hey I found your symptoms for your ps3 oddly a lot like mine, specifically playing fifa and the game freezing. it wasnt really freezing since i could still hear the crowd and everyone else was moving around the pitch.(i was playing pro ranked and pressed pause) anyways, i was wondering what ended up happening with your playstation and seeing if you have solved your problem, if so i would greatly appreciate more information, at the moment it is still playing disc, but when the freezing happens, forcing me to manually restart, i get welcome back with the system not recognizing the game until i eject and re-insert it.
any information would help
any information would help