i recently bought a 144hz monitor for mainly Overwatch and i have a huge problem in game : i managed to get only between 144 and 200 fps but sometimes it dropped to 110-120 fps with ALL LOW SETTINGS.
my config :
CPU : i5 4460
GPU : r9 fury
RAM : 16gb
It seems like it's not using 100% of my gpu (V-sync and fps limit set to off and no energy efficiency on)