Cold War Firebase Z still freezing and Crashing along with my system. (Ps4 pro)

I've done everything I possibly could on my end. if anyone is willing to help me out that would be greatly appreciated. Anywhere from getting Activision and treyarch to see this to any tips that might help. i really enjoy firebase Z but not when this happens everytime i reach round 51 if im lucky to reach 51 before it happens. I'd just like to enjoy the game without problems like this.