epics

Hi I just bought a ligit monitor it is a Benq XL2420T. I now run all my games at 1920x1080@120hz now every thing was fine until I started up battle field. When I started playing the monitor started now and then when there was a lot happening stuttering. I told bf4 to run a system check and I told me the frame rate was mostly at 99fps. How can I stop the stuttering. My system is an Amd FX-6300, 16gb adata ram, a asus r9 280, and a MSI 970 Gaming AM3+ AMD 970