[PS4] Battlefield 4, fps drops to unplayable levels. (below 10 even)

Most of the time I play on 64 man locker server and sometimes(very often) the fps drops below 10, meaning the game turns into slideshow even when there is no alot of action going on the screen. With the latest patch it got much worse. Sometimes it renders  the game unplayable.

PS4 dosent run extra hot and I can play Destiny hours on end just fine. Only game that works * is Battlefield 4.