motherboard msi b450m

I been using my 1060 about 2years and I only noticed the input lag then I started play competitive in fortnite, I can clearly describe it, but it's feels like my mouse I heavy as <Mod Edit>, unsmooth, delayd. I have 144hz monitor my pc specs : motherboard msi b450m 2, gpu 1060 3gb, 8gb ram(3200)...