The ASRock RX 5700 XT Taichi OC+ is the fastest factory overclocked Navi card we've tested so far. We measured it to run almost 2 GHz real clock on average in our real-life, mixed, gaming load. Temperatures are good, too, and the cooler includes idle-fan-stop.
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