Im afraid what is biting you in the butt is the 960M GPU. Its the very bottom tier GPU in any ROG notebook.
Tearing is caused when your display is putting up the images faster than your GPU can spit them out.
Some machines offer Gysnc, economy models do not.
Your best bet is to start your games on the lowest possible settings and work your way up a little at a time. Dont be disappointed to find that some games are just not at all playable on a 960M GPU.
“Two things are infinite: the universe and human stupidity, I'm not sure about the former” ~ Albert Einstein