Most of the performance a system leaves on the table without new hardware comes from software-side friction, not a fundamentally underpowered PC: outdated drivers, background load competing for resources, a display and graphics configuration that doesn't match what the hardware can actually do, or a system running hotter than it should. Here's what's actually worth checking, in the order most likely to matter.
Update your graphics driver from the official source
This is the single highest-value, lowest-risk step, and it costs nothing. Download drivers directly from the manufacturer — NVIDIA, AMD, or Intel — rather than relying solely on whatever Windows Update installs automatically, since manufacturer driver pages are typically updated more frequently and include game-specific optimizations and bug fixes ahead of Windows Update's own cadence.
Match in-game settings to what actually matters
Not all graphics settings cost the same amount of performance for the same amount of visual benefit. Settings worth checking specifically:
- Shadow quality and draw distance are frequently among the most expensive settings relative to their visible impact, especially at lower output resolutions.
- Upscaling technologies — NVIDIA DLSS, AMD FSR, and Intel XeSS — render internally at a lower resolution and reconstruct a higher-resolution frame, which can meaningfully reduce GPU load. Whether a given game supports one, which quality mode to pick, and how much it actually helps varies by title and by which generation of the technology the game implements — check in-game for what's available rather than assuming a specific gain.
- V-Sync and frame-rate caps can reduce input latency and eliminate screen tearing, but capping below your display's refresh rate trades some responsiveness or ceiling frame rate for consistency — this is a preference trade-off, not a universal "on" or "off" answer.
Turn on Hardware-Accelerated GPU Scheduling
Introduced with the Windows 10 May 2020 Update, Hardware-Accelerated GPU Scheduling shifts some GPU scheduling work from CPU-managed queues to GPU-hosted scheduling hardware. It requires a supported GPU and a driver that exposes WDDM 2.7 support, and is enabled from Settings > System > Display > Graphics > Change default graphics settings. It's worth being precise about what Microsoft's own DirectX Developer Blog actually says here, since it's more measured than "optimization" articles elsewhere often imply: Microsoft frames this feature as foundational modernization of the graphics subsystem rather than a direct performance boost, stating that "the transition should be transparent" and that most existing applications "have been designed to hide scheduling costs through buffering" — meaning many games may not show a noticeable difference either way. It's a safe, no-cost setting to enable, but Game Rig Lab isn't going to oversell it as a guaranteed FPS or latency win, because Microsoft's own documentation doesn't claim one.
Check Windows Game Mode
Game Mode, built into Windows, deprioritizes some background activity — such as Windows Update driver installs and restart notifications — while a game is running, and gives the foreground game higher scheduling priority for CPU and GPU resources. This is well-documented behavior corroborated across multiple technology outlets; we were not able to directly load Microsoft's own support page for this feature during research (it did not render outside a browser), so treat the specifics as well-corroborated rather than a verbatim quote from Microsoft. The consistent theme across sources: the benefit is most noticeable when a game is actively competing with other running programs for resources, and negligible on a system that already has plenty of headroom. It's on by default in current Windows versions, but worth confirming under Settings > Gaming > Game Mode.
Reduce background load
Beyond Game Mode's automatic handling, manually closing unnecessary background applications — browsers with many open tabs, chat/overlay software, and unused startup programs — frees CPU, RAM, and sometimes GPU resources that would otherwise compete with the game. Task Manager's Startup tab is the most direct way to see what's launching automatically and disable what you don't need running at all times.
Keep meaningful free space on your primary drive
Modern game engines stream assets continuously rather than loading everything up front, and an SSD that's nearly full can see reduced sustained write performance, which shows up as texture streaming hitches in some titles. Keeping a reasonable amount of free space on the drive your games are installed to is a simple, safe precaution rather than a guaranteed fix for any specific stutter.
Manage thermals
Sustained high temperatures cause CPUs and GPUs to throttle their clock speeds down to stay within safe limits, directly reducing performance during longer sessions even if short bursts look fine. Dust buildup in fans, radiators, and dust filters is the most common and most overlooked cause of rising temperatures over time on an otherwise unchanged system — a basic case cleaning and repaste (if you're comfortable doing so) is a genuine, evidence-based fix, not a placebo one.
What not to do
Not every "optimization" circulating online is safe or effective:
- Unofficial registry hacks promising performance gains are frequently unverifiable, can destabilize Windows, and are not something Game Rig Lab recommends or has validated.
- Third-party "FPS booster" or "game optimizer" utilities that promise universal gains across all games and hardware should be treated with skepticism — legitimate, measurable optimization comes from the specific, named changes above, not from a black-box tool making unverifiable claims.
- Disabling Windows security features (antivirus, Windows Defender) for a performance gain is not a trade Game Rig Lab recommends; any gain is typically small relative to the security risk.
When optimization isn't enough
If you've worked through the above and performance is still short of what a game needs, that's a genuine hardware limitation, not something further software tweaking will fix. Upgrade Advisor can identify which specific component — CPU, GPU, or RAM — is the actual limiting factor for a given game's official requirements, and Can I Run It does the same check before you buy a new title.
Conclusion
Real, safe performance gains without new hardware come from a small set of verifiable changes: current drivers, sensible in-game settings, Windows' own scheduling features, reduced background load, adequate drive space, and clean thermals. Skip anything promising a universal, unverifiable boost — if a change can't be explained in terms of what it actually does, it's not one Game Rig Lab recommends.
Sources
- Hardware-Accelerated GPU Scheduling — Microsoft DirectX Developer Blog, official technical documentation. Directly verified, including the WDDM 2.7 requirement and Microsoft's own conservative framing of the feature's benefit.
- Windows Game Mode behavior — Microsoft's own support page (support.microsoft.com, redirecting to support.xbox.com) could not be directly rendered during research; the description above reflects consistent, well-corroborated third-party reporting rather than a verbatim primary-source quote.
- NVIDIA, AMD, and Intel official driver download pages, linked above.
