My graphics card is a MSi GTX 1070, i was also having these crashes, i have updated to the next set of drivers from NVidia Expierience. Since then my C.O.D warzone has ran fine, hope this helps, also i found it a help to run it in safe mode 1st, then reboot the game and play the game in how the safe mode left it, it also started to run fine from there really, hope this helps some people. 
Hey JUDGE,
Please contact the Activision support from here!