Dell and the term "gaming monitor" haven't been used together in a long time. The 27" S2716DG aims to change that with NVIDIA's G-SYNC and a high quality TN panel.
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