I have a rx 570 8gb paired with a xeon e3 1220 v2 and 12 gb of ram. When i play warzone my fps are only 40 - 55 which is not normal for a rx 570.The gpu stays at 100% usage but goes to 0 then 20 then 60 and then 100 again and the cpu remains 90 - 100% used .In the firing range i get 100 fps consistent .im using battlenet since theres a big performance difference in steam and battle net. I have a 600w fsp psu which is brand new