Verification

Verification

GamerGuardian doesn't ask you to take its word for it. Six independent ways to confirm what it's doing:

1. Settings UI re-reads from the OS after Apply

The "Current" line under each setting card comes directly from the same Win32 / registry call any other tool would use. If that line changes after you click Apply, the change happened. If it doesn't, it didn't.

2. Apply Results window

The window that pops after every Apply (v0.1.18+) shows per setting:

• Before value, target value, and the after value (re-read from the OS post-apply)
• ✓ Verified or ✗ Failed
• The exact registry path or Win32 API used
• A copy-pasteable PowerShell command you can run yourself

3. External verification commands

Every setting reads/writes a documented Windows location.

Setting	PowerShell
HAGS	(Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\GraphicsDrivers' -Name HwSchMode).HwSchMode
Memory Integrity	(Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\DeviceGuard\Scenarios\HypervisorEnforcedCodeIntegrity' -Name Enabled).Enabled
Game Mode	(Get-ItemProperty 'HKCU:\Software\Microsoft\GameBar' -Name AutoGameModeEnabled).AutoGameModeEnabled
Game DVR	(Get-ItemProperty 'HKCU:\System\GameConfigStore' -Name GameDVR_Enabled).GameDVR_Enabled
Mouse precision	(Get-ItemProperty 'HKCU:\Control Panel\Mouse' -Name MouseSpeed).MouseSpeed
Fullscreen optimizations	(Get-ItemProperty 'HKCU:\System\GameConfigStore' -Name GameDVR_FSEBehaviorMode).GameDVR_FSEBehaviorMode
VRR	(Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Control\GraphicsDrivers' -Name VRROptimizeEnable).VRROptimizeEnable
System Responsiveness	(Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile' -Name SystemResponsiveness).SystemResponsiveness
Network Throttling	(Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile' -Name NetworkThrottlingIndex).NetworkThrottlingIndex
USB Selective Suspend	(Get-ItemProperty 'HKLM:\SYSTEM\CurrentControlSet\Services\USB' -Name DisableSelectiveSuspend).DisableSelectiveSuspend
Games task profile	Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Multimedia\SystemProfile\Tasks\Games'
Power plan	powercfg /getactivescheme
Windows service start type	sc qc <ServiceName> # look for START_TYPE
HDR / Refresh / Resolution	Settings → System → Display, or dxdiag

4. The change log

%APPDATA%\GamerGuardian\changes.log — every applied change (manual or silent auto-apply) is appended with full detail of the actual registry write or API call. See Logging for the schema and worked examples.

5. The --test CLI flag

GamerGuardian.exe --test

Writes every monitor's current readout to %TEMP%\gamerguardian_selftest.txt — same call paths the live UI uses, so the file is always in sync with what Settings shows. Useful for QA on weird hardware, for bug reports, or just to see exactly what the app reads.

6. The source

Every monitor is a single file under src/GamerGuardian/Monitors/ that does exactly one thing each. Read HagsMonitor.cs, say, to see the full code that reads and writes HAGS — about 30 lines.

See Source file reference for a tour of the rest of the codebase.