- Core parking#core-parking
- A power-saving feature that idles CPU cores. Great for laptops, bad for consistent gaming frametimes — Ultimate Performance disables it.
- DOCP / EXPO / XMP#docp-expo-xmp
- The BIOS profile that runs your RAM at its rated speed instead of a slow JEDEC default. Enabling it is usually the single biggest free FPS gain — and software cannot do it for you. See BIOS & RAM guide.
- DPC latency#dpc-latency
- How long a deferred procedure call waits before the CPU services it. High DPC latency shows up as stutter and inconsistent frametimes. MSI-mode interrupts and NIC tweaks target this. See the latency tweaks.
- MMCSS#mmcss
- Multimedia Class Scheduler Service. Lets Windows give a registered task class (here, "Games") a higher GPU/CPU scheduling priority.
- MPO#mpo
- Multiplane Overlay — a Windows compositor feature that, on some GPUs (notably RX 580), causes desktop flicker/stutter. Disabling it is a known workaround. See the MPO tweak.
- MSI mode#msi-mode
- Message-Signaled Interrupts. A cleaner way for a device (GPU/NIC) to raise interrupts than legacy line-based IRQs, usually lowering DPC latency. See MSI-mode interrupts.
- Nagle’s algorithm#nagles-algorithm
- A TCP feature that batches small packets. Disabling it is a popular "tweak" but a placebo for UDP shooters like Fortnite. See the network tweaks.
- Resizable BAR / SAM#resizable-bar-sam
- Lets the CPU access the whole GPU framebuffer at once. Modest help on older cards, harmless to enable in BIOS.
- SmartScreen#smartscreen
- Windows’ reputation check for downloaded apps. It warns on anything without a paid code-signing certificate — it is not a malware verdict. See Safety & SmartScreen.
- TRIM#trim
- The command that tells an SSD which blocks are free so it can keep write speeds high. FrameForge verifies it is on; it never disables the beneficial scheduled ReTrim.
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See the terms in context.
Most of these show up in the Tweak Library, where you can read which tweak targets which thing — DPC latency, MSI mode, TRIM and the rest — and the exact key it writes. The two that live in BIOS, not Windows, are covered in the BIOS & RAM guide.