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21+ system changes across 8 categories. Every one is documented, opt-in (or pre-approved with rationale), and reversible. No hidden tweaks. No surprise registry edits.
This page is updated whenever SageTweaks ships a new tweak category. The version of the app shows you the same categories at install time, with checkboxes. If you ever find an undocumented change, email support@sagetweaks.com— it's a bug, not a feature.
Windows defaults trade FPS for battery life. We switch to performance plans during gaming sessions and revert when you exit.
| Change | Description | Reversible |
|---|---|---|
| Power Plan: Ultimate Performance | Enables the hidden Ultimate Performance scheme; activates only when gaming. | ✓ Yes |
| CPU Core Parking | Disables core parking on demand to prevent micro-stutter. | ✓ Yes |
| CPU Minimum Performance State | Adjusts processor power behavior during performance-focused sessions. | ✓ Yes |
| USB Selective Suspend | Disabled to prevent input device polling spikes. | ✓ Yes |
| PCI Express Link State Power Management | Set to Off during gaming to keep GPU PCIe link active. | ✓ Yes |
Reduces unnecessary buffering and acknowledgement delays that show up as ping spikes in online games.
| Change | Description | Reversible |
|---|---|---|
| Nagle's Algorithm (TcpAckFrequency) | Disabled per network adapter to reduce micro-stalls in TCP packet ACK. | ✓ Yes |
| TCP NoDelay (TCPNoDelay) | Enabled per adapter for low-latency packet flush. | ✓ Yes |
| TCP/IP Auto-Tuning | Set to Normal (default state Windows occasionally degrades). | ✓ Yes |
| Network Throttling Index | Disabled — Windows default throttles non-multimedia traffic. | ✓ Yes |
Game executables you opt into are given High process priority via Image File Execution Options — the OS-supported way to raise priority without runtime hooking.
| Change | Description | Reversible |
|---|---|---|
| PerfOptions\CpuPriorityClass = 3 (High) | Per-game opt-in. Removes by deleting the IFEO key. | ✓ Yes |
| PerfOptions\IoPriority = 3 | Raises I/O priority for game I/O operations. | ✓ Yes |
| PerfOptions\PagePriority = 5 | Keeps game pages resident in memory longer. | ✓ Yes |
Windows global timer resolution affects scheduling granularity. 0.5ms is industry-standard for low-latency gaming and reverts on exit.
| Change | Description | Reversible |
|---|---|---|
| Global Timer Resolution → 0.5ms | Active only during gaming sessions. Reverts to 15.6ms default when SageTweaks exits. | ✓ Yes |
Background services consume CPU, RAM, and disk I/O. We only modify services with documented gaming-relevant impact, and only with your explicit confirmation.
| Change | Description | Reversible |
|---|---|---|
| SysMain (Superfetch) | Set to Manual or Disabled on SSD systems where it provides no benefit. | ✓ Yes |
| Windows Search | Optionally narrowed indexing scope (not disabled by default). | ✓ Yes |
| Print Spooler | Disabled if no printer is detected. Re-enables automatically when needed. | ✓ Yes |
| Connected User Experiences and Telemetry | Set to Disabled (Microsoft-supported configuration). | ✓ Yes |
Audit-only by default. Nothing is removed. You approve every disable, and items can be re-enabled with one click.
| Change | Description | Reversible |
|---|---|---|
| Audit + Disable list | Identifies high-impact startup items via task manager metrics. Disables only on your approval. | ✓ Yes |
Optional. Trades visual polish for input latency. Off by default; enable per-tweak.
| Change | Description | Reversible |
|---|---|---|
| Animations / Transparency / Shadows | Disables select Windows shell animations to reduce composition overhead. | ✓ Yes |
| Mouse Acceleration | Disabled — recommended for competitive gaming. Off by default; opt-in. | ✓ Yes |
Pre-game cleanup. Lists processes you choose to terminate before launch. Nothing is killed without your approval.
| Change | Description | Reversible |
|---|---|---|
| Pre-game process cleanup | Defines a kill list (Discord, Chrome, Spotify, etc.) you control. Per-game. | ✓ Yes |
See our security model and FAQ on what to expect from a PC optimizer you can actually verify.