If you ask any PC builder about the most impactful upgrade they’ve made to their rig, you’ll likely walk into a conversation about a new GPU, a shiny new X3D chip, a high-end motherboard, or perhaps a PCIe Gen 5 NVMe. What almost nobody will mention, however, is a BIOS toggle, because unlocking more performance out of existing components isn’t ever seen that way. But there are settings within your UEFI that can change how your PC experience feels, and they’re almost certainly toggled incorrectly out of the box.