You have bought decent hardware, but Windows out of the box rarely lets it run at its best. The good news is that most of the gains worth having are free, take an afternoon, and carry almost no risk. The bad news is that the internet is full of dangerous "tweaks" — registry hacks, debloat scripts and cracked optimiser tools — that can break your install or open you up to malware. This guide sticks to the safe, proven wins that genuinely move frame rates, and is honest about how much they actually help.
Before we begin, set your expectations sensibly. Optimisation gives modest but real gains; it will not turn a weak PC into a strong one. If your bottleneck is the hardware itself, no setting will fix it — see our guide to diagnosing a CPU vs GPU bottleneck first, and if you are buying fresh, our roundup of the best gaming PC builds in Nigeria for 2026 will save you chasing software fixes for a hardware problem.
Update your GPU drivers — the single biggest free win
If you do one thing, do this. Graphics driver updates routinely add double-digit performance for new game releases, fix stutter and squash crashes. Many machines in Nigeria ship with whatever driver was on the disk a year ago, leaving real performance on the table.
- Download drivers only from the official source: NVIDIA's own app or website, AMD's website, or Intel for Arc GPUs. Never from random "driver updater" tools.
- For a stubborn or upgraded card, do a clean install — the official installer has a "perform a clean installation" tick box that wipes old, conflicting files.
- Update every month or two, and always before launching a big new title.
Turn on the Windows gaming features that actually help
Windows 11 ships with a few genuine performance features switched off or worth confirming. These are built in, supported by Microsoft, and safe to enable.
- Game Mode (Settings, Gaming, Game Mode): leave it on. It prioritises the game and holds back background interruptions like driver updates.
- Hardware-accelerated GPU scheduling (Settings, System, Display, Graphics, Default graphics settings): turn it on. It can reduce latency and smooth out frame delivery on supported GPUs.
- Variable refresh rate and Auto HDR live in the same menu — enable VRR if you have a FreeSync or G-Sync monitor.
A word of caution on VBS and Memory Integrity (Core Isolation). Disabling them can recover a few per cent of performance, but they are genuine security protections. Only consider it if you understand the trade-off, and for most people the safer choice is to leave them on. A few frames are not worth weakening your machine's defences.
Set the right power plan and per-game GPU preference
Windows throttles power to save energy, which is sensible for a laptop on battery and pointless for a desktop you are gaming on.
- Set the power plan to High performance (or Balanced on a modern Ryzen system, where Balanced is properly tuned). Find it under Settings, System, Power, or the old Control Panel power options.
- Set a per-game GPU preference: Settings, System, Display, Graphics, add the game's executable, and choose High performance. This matters most on laptops with both integrated and discrete graphics, where games sometimes default to the weaker chip.
Free up RAM and CPU by managing background clutter
Every browser tab, chat app and "helper" running in the background steals memory and CPU cycles your game wants. You do not need risky scripts to clean this up — Windows gives you the tools.
- Open Task Manager, Startup apps, and disable anything that does not need to launch with Windows. Be conservative: leave antivirus and audio drivers alone.
- Close browsers and heavy apps before a serious session. Discord and a game is fine; thirty browser tabs and a 4K stream are not.
- Disable in-game overlays you do not use (Discord, Xbox Game Bar, GPU vendor overlays). They occasionally cost frames or cause stutter.
Keep games on the SSD, and keep the SSD breathing
Storage will not raise your average frame rate, but a slow drive causes long loads and texture pop-in that feels like poor performance.
- Install games on an SSD, never a mechanical HDD. If your PC has both, point your game library at the SSD.
- Leave roughly 10 to 15% of the SSD free. A drive crammed to the brim slows down noticeably.
- Keep Windows itself updated — feature and security updates often include scheduler and graphics fixes that help games.
Set your monitor to its full refresh rate (people forget this)
This is the most common miss we see. You buy a 144Hz or 165Hz monitor, plug it in, and Windows quietly runs it at 60Hz. All those extra frames your PC is producing never reach your eyes.
- Go to Settings, System, Display, Advanced display and set the refresh rate to the panel's maximum.
- Confirm the resolution is set to the monitor's native value — not a blurry lower one.
- If high refresh is not offered, check your cable (use DisplayPort or a high-speed HDMI) and that you are plugged into the graphics card, not the motherboard.
Once the panel is running properly, the difference between average frame rate and how smooth the game actually feels comes down to frame pacing — our explainer on frame time versus FPS is worth a read, and competitive players should look at NVIDIA Reflex to cut input latency.
Heat, power and genuine Windows: the Nigerian realities
Two local factors deserve special attention. The first is heat: ambient temperatures here are high, and a hot GPU or CPU will throttle itself, quietly dropping performance.
- Ensure good case airflow, keep the machine out of direct sun, and clean dust filters every few months.
- Monitor temperatures with a reputable tool. Sustained CPU or GPU temperatures near the 90 degree mark mean you have a cooling problem to solve, not a setting to tweak.
The second is power. NEPA's unstable supply and sudden cuts can corrupt Windows or a game install mid-write. A decent UPS gives you the seconds needed to save and shut down cleanly, and protects your hardware from the dirty power and surges that follow an outage.
Finally, and this matters more in Nigeria than almost anywhere, use genuine Windows. Pirated copies and cracked "optimiser" or "booster" tools are everywhere, and they are a security and stability disaster — bundled malware, broken updates, and tweaks that quietly damage your install. A genuine licence from a reputable local retailer or Microsoft directly costs far less than the data and downtime a compromised system will cost you. Skip the snake oil; the real wins are the free ones above.
Frequently Asked Questions
Will these tweaks dramatically boost my old PC? No, and be wary of anyone who promises that. Updated drivers and the right refresh rate can give a real, worthwhile uplift, but software cannot add performance the hardware does not have. If frame rates are still low after this checklist, the bottleneck is your components, not Windows.
Should I use those "game booster" or PC optimiser apps? Avoid them. The reputable gains they claim are things you can do yourself safely in Windows settings, and many bundle adware, make risky registry changes, or are outright cracked software carrying malware. Genuine Windows plus the steps in this guide will outperform any third-party "booster".
Is it safe to disable VBS or Memory Integrity for more FPS? It can recover a few per cent, but those features are real security protections. Only disable them if you genuinely understand and accept the trade-off. For most gamers, the safer and recommended choice is to leave them enabled.
The One Thing to Remember
Optimisation is about removing the things holding your hardware back — old drivers, a 60Hz cap on a fast monitor, background clutter, heat and dirty power — not about magic settings that conjure performance from nothing. Do the safe, proven steps, ignore the risky hacks and cracked tools, and you will get every frame your PC is genuinely capable of.
Want a system that runs right out of the box, set up with genuine Windows and tuned properly before it reaches you? Build yours with our configurator, or contact us and we will spec a machine that needs no snake oil to perform.