Built a new rig originally with an evga 1060 6gb as well as i5 6600k @ 4.5, 16gb ddr4 2400, z170p, ssd. Was getting 140+ fps on heroes maxed out at 1080p. Few days later the evga superclocked 1070 went on sale so I traded up and installed. Now sometimes I get dips below 100 fps. What gives ?? All Temps are excellent.