How to Optimize Windows 11 for Gaming: Ultimate 2026 Guide
Power Plan: The Most Impactful Free Setting
Windows 11 defaults to a "Balanced" power plan that throttles your CPU to save energy. In gaming, this causes the CPU to run below its maximum clock speed — reducing performance in CPU-limited scenarios. Switching to High Performance or Ultimate Performance tells Windows to keep the CPU running at maximum speed at all times.
Ultimate Performance mode is hidden by default in Windows 11. To enable it: open PowerShell as Administrator and run: powercfg -duplicatescheme e9a42b02-d5df-448d-aa00-03f14749eb61. Then open Power Options and select Ultimate Performance.
- Open Settings → System → Power & Battery → Power Mode → Best Performance.
- For Ultimate Performance: open PowerShell as Admin, run the powercfg command above.
- This setting alone can add 3–8% FPS in CPU-limited games like CS2 and Valorant.
- On a desktop PC, this costs nothing — only on a laptop does it affect battery life.
- Check if CPU boost clocks are reaching maximum using HWiNFO64 during gaming.
On Intel CPUs, also disable "Intel Speed Shift Technology" limits in BIOS if your CPU is not reaching its advertised boost clock during gaming.
Windows Game Mode and Hardware-Accelerated GPU Scheduling
Windows Game Mode (Settings → Gaming → Game Mode) prioritises game processes over background tasks when enabled. In Windows 11, Game Mode also disables Windows Update driver downloads during gaming sessions — preventing the surprise FPS drops caused by driver updates mid-game.
Hardware-Accelerated GPU Scheduling (HAGS) moves GPU memory management from the CPU to the GPU. In supported games on supported GPUs (RTX 30/40 series, RX 6000/7000 series), this reduces CPU overhead and input latency. Enable it in Settings → Display → Graphics → Default graphics settings.
- Enable Game Mode: Settings → Gaming → Game Mode → On.
- Enable HAGS: Settings → Display → Graphics → Default Graphics Settings → Hardware-accelerated GPU scheduling → On.
- Restart your PC after enabling HAGS for changes to take effect.
- HAGS benefits: reduced CPU overhead, slightly lower input latency in supported titles.
- If enabling HAGS causes instability, disable it — some older games are not compatible.
- Game Mode + HAGS together reduce CPU overhead and prevent background process interference.
Background App Cleanup: Recovering CPU and RAM
Background applications steal CPU cycles and RAM that your games need. The biggest offenders are: Chrome (each tab uses 50–150MB RAM), Discord with overlay enabled, Xbox Game Bar, OneDrive sync, Windows Search indexing, and any RGB/fan control software running GPU-monitoring loops.
The most impactful change is disabling the Discord overlay — it hooks into every game process and can consume 1–3% of CPU time per second. Disable it in Discord Settings → Game Overlay → Enable in-game overlay → Off.
- Disable Discord overlay: Discord Settings → Game Overlay → off. Saves 1–3% CPU.
- Disable Xbox Game Bar: Settings → Gaming → Xbox Game Bar → off.
- Disable OneDrive auto-sync during gaming: pause sync in system tray.
- Task Manager → Startup Apps — disable RGB software, update checkers, and cloud backup tools.
- Close Chrome entirely before gaming — 10 tabs can use 1–2GB RAM and 5% CPU.
- Use MSI Afterburner instead of multiple RGB apps — one monitoring tool vs five.
Open Task Manager → Details tab during gaming and sort by CPU%. The top offenders (after your game and GPU driver) are usually Discord, Chrome renderer processes, and Windows Search.
NVIDIA and AMD GPU Driver Settings for Gaming
GPU control panel settings significantly affect gaming performance and input latency. NVIDIA's control panel and AMD's Adrenalin software both have settings that can be tuned for maximum gaming performance.
For NVIDIA: open NVIDIA Control Panel → Manage 3D Settings → Power management mode → "Prefer maximum performance". This prevents the GPU from clock-gating between frames. Also enable Low Latency Mode → Ultra for competitive games to reduce input lag.
- NVIDIA: Control Panel → Manage 3D Settings → Power management → Prefer maximum performance.
- NVIDIA: Low Latency Mode → Ultra (competitive games only — increases CPU usage).
- NVIDIA: Texture filtering quality → Performance (saves GPU compute for FPS).
- AMD: Adrenalin → Gaming → Global Graphics → Anti-Lag → Enabled.
- AMD: Radeon Boost → Enabled for dynamic resolution scaling in supported games.
- Both: Enable Resizable BAR (ReBAR) in BIOS if your GPU and motherboard support it — up to 10% FPS in some games.
BIOS Tweaks That Boost Gaming Performance
Several BIOS settings directly impact gaming performance and are disabled by default. XMP/EXPO is the most important — it enables your RAM to run at its advertised speed rather than the slow default JEDEC speed. Enabling it takes 2 minutes and can deliver up to 15% FPS improvement in CPU-limited games.
Resizable BAR (also called Smart Access Memory on AMD platforms) allows the CPU to access the full GPU VRAM instead of a limited 256MB window. This is a free hardware feature requiring only a BIOS update on supported systems — and can deliver 3–10% FPS improvement in titles like Forza Horizon 5, Cyberpunk 2077, and Dying Light 2.
- Enable XMP (Intel) / EXPO (AMD) in BIOS → saves up to 15% FPS in CPU-limited games.
- Enable Resizable BAR / Smart Access Memory if supported — check BIOS for "Above 4G Decoding" + "Re-Size BAR Support".
- Update BIOS firmware — manufacturers release gaming optimisations in newer versions.
- Disable "Fast Startup" in Windows — it causes partial hibernation that can affect performance.
- Ensure CPU boost is not artificially limited — check Power Limit settings in BIOS.
- Use our bottleneck calculator after enabling XMP — you will often see the CPU bottleneck reduce.
XMP/EXPO is safe and covered under your CPU and RAM warranty. It is not overclocking in the traditional sense — it simply runs components at their rated specification.
Storage and Pagefile Optimisation
An NVMe SSD dramatically reduces game load times and eliminates texture streaming stutters in open-world games. If you are still running games on an HDD, moving them to an SSD is the most impactful storage upgrade possible. Games like Cyberpunk 2077 and Starfield actively stream textures during gameplay — on an HDD, this causes visible pop-in and stutters.
The Windows pagefile is virtual memory on your SSD used when RAM runs out. Windows manages this automatically, but on systems with 8–16GB RAM, the pagefile is heavily used in modern games. Ensure your pagefile is on your fastest drive.
- Install games on NVMe SSD — eliminates texture pop-in in open-world games.
- Keep at least 15% free space on your game drive — performance degrades on full SSDs.
- Pagefile: leave on Automatic management in Windows (default) unless you have 32GB+ RAM.
- Defragmentation: only for HDDs — never defrag an SSD.
- Run Storage Sense (Settings → System → Storage) to clear cache and temp files monthly.
- DirectStorage (Windows 11 + supported games) reduces CPU overhead for asset loading — no action required, it is automatic.
Conclusion
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