i5 4690K, GTX970, 8Gb ram, Windows 10

60% cpu and very laggy in menus, selecting a weapon and accessories
90 - 100% cpu in game with only 50-60% GPU utilisation (40-50 fps at medium settings)

when cpu hits 100% (which happens as soon as I move) then ping rises to over 1000 ms. no disk activity

this makes the game utterly unplayable

turning down to low setting only affects the GPU percentage, doesn't lower maxed out CPU