I'm playing, enjoying my game, and then the screen goes weird, a bunch of vertical lines show up, then my screen goes back to what i was doing, but i'm spinning uncontrollably for a few seconds, then my ps4 makes a noise and the system shuts down. I have to wait several seconds before i can try turning it back on, at which point it has to run a system check and warns me to no unplug my system with out turning it off. this feels like a very serious issue and it's worried me enough that i'm not playing destiny again until i hear of another patch. i just got my system back from sony after refurbishing, and i'm not going to risk it going bad again. no other game on my system does this. some times this happens after an hour or two or play, sometimes it happens after only a few minutes.