The AOC AGON AG271QG is one of the least expensive 27" high-end gaming monitors on the market. Your money will buy you an AHVA (IPS-type) 1440p panel with a refresh rate that goes all the way up to 165 Hz, as well as a G-Sync module for sublime smoothness of in-game action.
You do software updates to get the most from favourite programs right? Updating a motherboard BIOS can in a timely manner is also critical. The guide to Flashing a Motherboard BIOS spells out the often complicated steps in plain english. PCSTATS Tips