Assassin's creed 4 crash and freeze

chung1998122

Honorable
Feb 6, 2014
29
0
10,530
Hi recently I built my new rig and im running windows 8.1 pro 64 bit.
My Specs are:
i7-4770
GTX 780
16 GB RAM
H87M-E
I just used the rig for about two months. During the first month , i run AC4 at highest settings without any errors . However, when i tried to play AC4 a few days before , when i play around 10 mins or sometimes 20 mins , the screen freezes and some color dots appeared on the screen , then the game crash to desktop and sometimes it stays there and i need to force the whole system to quit and sometimes even critical process died. All my components drivers are updated(Nvidia 334.89) and I checked all my components arent faulty . Is there anything causing my game to crash ?