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👁️ Script Preview

📊 Before / After Results

❌ Off — Default Windows (15.6250ms)

🟡 GlobalTimerResolutionRequests only (1.0000ms)

✅ SetTimerResolution + GlobalTimerResolutionRequests (0.5060ms)

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Folder structure

Place the folder in your Downloads and make sure it looks like this before launching SetTimer.ps1:

../Downloads/Timer Resolution/
├── Content/
│ ├── SetTimerResolution.exe
│ └── Windows10Fix/
│ └── Dpclat.exe
├── MeasureSleep.exe
├── SetTimer.ps1
└── README.md

Caution

Do not move or rename any files — the script uses relative paths.

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1 Apply the registry key

reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager"/v "GlobalTimerResolutionRequests"/t REG_DWORD /d 1/f

Important

A restart is required after applying this key.

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2 Choose your resolution

Start with 0.5200ms (option 2) — most stable for most systems. There is no universal best value, it depends on your hardware.

Option	Value	Info
1	Custom	Any value between 5000 and 5200
2	0.5200ms	⭐ Recommended
3	0.5120ms	Stable
4	0.5086ms	Most optimal (if stable)
5	0.5060ms	Perfect (if stable)
6	0.5000ms	Experimental

Note

Values are in 100-nanosecond units. Example: 5120 = 0.5120ms.

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3 Validate with MeasureSleep.exe

Launches automatically after applying a resolution. It measures how long Windows actually sleeps when asked to sleep 1ms — use it to confirm your resolution is active and stable.

✅ Good — low and consistent delta (~0.01 to 0.02ms):

Resolution: 0.5086ms, Sleep(1) slept 1.0180ms (delta: 0.0180)
Resolution: 0.5086ms, Sleep(1) slept 1.0148ms (delta: 0.0148)

❌ Bad — delta spiking (0.47ms+), sign of a system interrupt:

Resolution: 0.5086ms, Sleep(1) slept 1.4752ms (delta: 0.4752)

Occasional spikes are normal. Frequent ones signal an issue — see Reduce DPC Spikes below.

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Fix — Windows 10

Windows 10 reverts to default resolution when no process actively holds a high-precision request. Keep both SetTimerResolution.exe and dpclat.exe running in the background at all times.

Important

DPC Latency Checker must stay open to maintain the resolution on Windows 10.

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Reduce DPC Latency Spikes

Cause	Fix
Power Plan	Use High / Ultimate Performance with proper C-States
Wi-Fi & Bluetooth	Disable in Device Manager if using Ethernet
Audio overlays	Remove Nahimic, Sonic Studio, Realtek Audio Console
GPU & Chipset drivers	Clean install (DDU recommended)
Background software	Disable iCUE, Synapse, Armoury Crate and antivirus real-time scan

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