Windows
Optimization
Guide

Disable Core Isolation / Memory Integrity

Memory Integrity (HVCI) runs a hypervisor validation layer that intercepts every kernel driver load. On gaming PCs this adds measurable CPU overhead to every system call — showing up as increased frame latency and worse 1% lows in CPU-bound titles.

1. 1. Open Windows Security → Device Security → Core Isolation Details
2. 2. Toggle Memory Integrity off
3. 3. Reboot. Windows may show a warning about unsigned drivers — this is expected and safe to dismiss on a personal PC.

Disable Spectre & Meltdown Mitigations

These patches were applied silently via Windows Update to address CPU hardware vulnerabilities discovered in 2018. They add overhead to every context switch and kernel transition. On a gaming rig you personally control, the real-world exploit risk is near zero — but the performance cost is constant.

Use InSpectre by Steve Gibson (GRC) — trusted security tool, been around for decades, no install required.

1. 1. Download InSpectre from GRC (link below)
2. 2. Run as Administrator
3. 3. Click Disable Meltdown Protection and Disable Spectre Protection
4. 4. Reboot

Toggle Defender via D-Control

Windows Defender runs real-time background scans that can trigger mid-game — causing sudden FPS drops and stutter when it decides to scan a newly written game file. D-Control gives you a one-click toggle so you can disable it before gaming and re-enable it when done.

This is not a replacement for safe browsing habits. Think of it as a performance switch, not a security bypass.

1. 1. Download D-Control from sordum.org (link below)
2. 2. Run as Administrator
3. 3. Toggle Defender off before a gaming session, on when done

Chris Titus Tech WinUtil

One of the most trusted and actively maintained Windows utility tools in the community. It removes telemetry services, Cortana, Xbox Game Bar, unnecessary scheduled tasks, and optional Windows features that consume background CPU and RAM without contributing anything for a gaming workload.

1. 1. Open PowerShell as Administrator (right-click Start → Windows Terminal (Admin))
2. 2. Paste and run the command below. A GUI will open.
3. 3. Go to Tweaks tab → select Desktop or Laptop Gaming preset
4. 4. Review the selected tweaks, then click Run Tweaks

Custom Power Plans

Windows' built-in power plans are designed around energy efficiency — they allow the CPU to drop to lower power states between tasks to save power. For gaming, this means CPU frequency can lag behind demand for a brief window, adding latency. Custom plans prevent this entirely by keeping the processor primed at all times.

If you are unsure where to start, Core or Atlas are solid general-purpose picks. Download one, import it, select it, and test.

1. 1. Download a plan below
2. 2. Open Command Prompt as Administrator
3. 3. Run the import command below, replacing the path with where you saved the file
4. 4. Open Control Panel → Power Options and select the imported plan

Win32PrioritySeparation

This registry value controls how the Windows scheduler allocates CPU time slices between foreground and background processes. The Windows default is a balanced ratio that keeps background tasks responsive. For gaming, you want the foreground process — your game — to receive the overwhelming majority of CPU time.

1. 1. Press Win + R → type regedit → press Enter
2. 2. Navigate to the path below
3. 3. Double-click Win32PrioritySeparation
4. 4. Set Base to Hexadecimal and enter one of the values from the options below
5. 5. Click OK and reboot

Nvidia Profile Inspector + Vortex Profiles

NvidiaProfileInspector (NVI2) exposes hundreds of hidden per-application driver settings that the standard Nvidia Control Panel does not show. Our custom .nip profile files are pre-configured to minimize render latency — simply open the tool and import the profile in seconds.

1. 1. Download NvidiaProfileInspector from the official GitHub release page (link below)
2. 2. Extract and run nvidiaProfileInspector.exe
3. 3. Click the Import user profiles icon in the top-right toolbar
4. 4. Select one of the Vortex .nip files below
5. 5. Click Apply changes (top right)

NVCleanstall — Clean Nvidia Driver Install

The standard Nvidia installer bundles GeForce Experience, telemetry services, HD Audio drivers, HDCP enforcement, and several other components most gamers never use. NVCleanstall strips these at install time and exposes advanced performance tweaks during the installation process.

The screenshots below show the exact settings to use. The important ones are Message Signaled Interrupts (reduces GPU interrupt latency) and Disable HDCP.

Installation Tweaks — Recommended Settings

Set Display Scaling to "No Scaling"

When the GPU handles display scaling, it adds an extra processing step to the render pipeline. Setting scaling to "No Scaling" and delegating to the display removes this overhead. This is particularly relevant if you use a non-native resolution, custom resolution, or stretched aspect ratio.

1. 1. Open Nvidia Control Panel (right-click desktop → Nvidia Control Panel)
2. 2. Go to Display → Adjust desktop size and position
3. 3. Set Scaling to No Scaling
4. 4. Set Perform scaling on to Display
5. 5. Click Apply

Hardware Accelerated GPU Scheduling (HAGS)

HAGS allows the GPU to manage its own VRAM scheduling directly rather than routing those requests through the CPU. This cuts latency out of the render pipeline and can meaningfully improve 1% lows and frame pacing, especially in GPU-heavy workloads.

Some games perform better with HAGS on, others with it off — it depends on the title and your GPU generation. Generally on is better, but it is worth testing both and seeing what your specific games prefer.

1. 1. Open Windows Settings → System → Display
2. 2. Scroll down and click Graphics (or "Change default graphics settings")
3. 3. Toggle Hardware-accelerated GPU scheduling on
4. 4. Reboot

Set Game to High Performance GPU

Windows sometimes routes rendering through integrated graphics or a lower-priority GPU — especially on laptops with both iGPU and dGPU. Explicitly assigning your game to the high-performance GPU guarantees it always runs on the right hardware, which can silently reclaim significant performance on dual-GPU systems.

1. 1. Open Windows Settings → System → Display → Graphics
2. 2. Click Browse and navigate to your game's .exe file
3. 3. Find the game in the list, click Options
4. 4. Select High performance and click Save

Playbooks

If you want to go further than individual tweaks, custom Windows playbooks automate everything above and more — operating at a level that simple manual changes cannot achieve. They remove telemetry at the kernel level, strip unnecessary Windows components entirely, and tune the memory manager and service stack for low-latency gaming.

The result is a Windows install that boots faster, stays cleaner over time, and runs games with noticeably less background interference. These are best applied on a fresh Windows installation.