I have a amd ryzen 1700 running at stock, with an amd rx 580 in over-watch i see frames from 144 then dropps to 70 and goes back up, in my old system intel i7 920(7 years old) with my rx 580 i got over 144fps on every game...any help? this is a new install of windows 10, brand new psu, mobo, and cpu. game dvr is off and power in windows is on high performance