Not many know this! It's always good to have it enabled for gaming.
What is the Ultimate Performance Power Plan?
The Ultimate Performace power plan is designed to give an extra boost to high-power systems (think workstations and servers) by optimizing the High-Performance power plan. It’s geared toward reducing or eliminating micro-latencies associated with fine-grained power management techniques. A micro-latency is just the slight delay between when your OS recognizes that a piece of hardware needs more power and when it delivers that power. Although this may only be a fraction of a second, it can make a difference.
The Ultimate Performance plan eliminates the polling of hardware to see if it needs more juice and lets the hardware to consume all the power it needs. Also, any power-saving features are disabled to improve performance even more. Because of this, machines that operate on battery power aren’t given this option by default, as it can consume more power and kill your battery much faster.
