i gave got a gtx 1070 (gigabyte mini ITX). processor is core i5 7400(no cpu bottleneck i have ensured it). at first i bought a gtx 1060 and the exact same issue was there and i could not play any games. ( hitman, gta 5, witcher 3, rise of the tombraider). all settings were stock and power management set to maximum. and no OC. also i monitored using msi afterburner. the gpu usage in hitman would be only 50 to 60 percent and sometimes would hit 40, fps is about 40 to 50 which is pretty low, vsync is off. i am using the benq xl2411 144hz monitor and 1080p. this issue is making me crazy. the motherboard is gigabyte ga h270 hd3p. and ram is corsair vengeance 2400 mhz 2x8gb(dual channel).gpu temperatures are around 59 degrees with the fanat 90%(i used the custom curve). i think maybe it is a ram prob. i changed from 1060 to 1070 thinking that the problem was with the gpu but the same issue persists. its really annoying when hitman should give you arounf 70 fps in ultra preset while it is giving 40. i got a 600 watt psu which is more than enough. after days of browsing and researching i never got the solution for this. please help!!