If your game keeps crashing, in my experience it is a dirty and dusty PS4. I was given mine by a friend who claimed it wouldn't read any discs. After research and a few how to videos, I carefully took mine apart, cleaned it entirely and then slowly took apart the disc drive. A few shots of compressed air and a cotton swab with the tiniest amount of rubbing alcohol across the laser lens has fixed all of my game crash and disc read errors. Also cleaning the rollers as they get pretty dirty. I do not recommend doing this if you are even the slightest bit nervous about it as you void the factory warranty by removing the stickers to remove the case screws. If you do decide to do it, touch a lot of metal stuff before you touch your PS4, do not work on it while it's under any kind of power, UNPLUG IT!!!, and do everything you can to avoid building up static electricity in your body. I also recommend purchasing the correct security torx screwdriver bit as you'll only be able to remove the screws once with a standard T8 or T7, forget which one it is.