Hello, i have in game lag, but i have intel i7 7700, 8gb of ram, GTX 1060 6gb and all games are laggy even if i put games on low settings. I just updated my drivers as well.
Check if your audio/video cable (HDMI/DVI) is connected to one of the graphics card ports and not to the motherboard ones.
If this is OK, install MSI Afterburner and set it to show on display your CPU and GPU usage and temperatures while playing as one of them, probably the CPU, may be overheating.