Input Lag Benchmark

Input Lag Test

Measure your click timing consistency and input delivery variance — directly in your browser.

Input lag is the total delay between a physical input event and its on-screen effect. This test benchmarks the consistency of your click input delivery — revealing USB polling irregularities, OS scheduler latency, and driver-level jitter that affect your competitive performance.

RESPONSIVENESS LABBrowser-based · No download required

Gaming Responsiveness Lab

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Responsiveness

Interactive smoothness and responsiveness tests designed for gamers.
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4 interactive testsBrowser-basedShareable results

Click Consistency

Click the target 10 times at a steady, even rhythm.

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Consistency

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Rhythm

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Avg Interval

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What This Test Measures

Click Interval Timing

Measures the time between consecutive click inputs. Perfect intervals indicate consistent USB polling and OS thread scheduling.

Consistency Score

Derived from the variance of click intervals. A score of 100 means perfectly even delivery; lower scores reveal polling or scheduling irregularities.

Rhythm Classification

Categorizes your input pattern as Metronome, Rhythmic, Steady, or Variable — giving qualitative context to the raw consistency percentage.

What Affects Your Score

Mouse Polling Rate

At 125 Hz, each report window is 8 ms — worst-case click delay. At 1000 Hz it drops to 1 ms.

high

Windows Timer Resolution

Default 15.6 ms timer creates quantized input delivery. Setting to 0.5 ms enables consistent sub-ms scheduling.

high

CPU Power Plan

Balanced plan parks CPU cores, causing ramp-up delays that appear as click delivery variance.

medium

USB Hub vs Direct Port

USB hubs introduce shared bandwidth and can add polling irregularity. Use a direct motherboard USB port.

medium

Background CPU Load

Apps competing for CPU time interrupt input thread scheduling, creating spike patterns in click intervals.

low

Score Reference

Responsiveness Score Ranges

Elite85–100Hardware-optimized setup. Sub-15 ms total pipeline latency.

Pro70–84Well-tuned. Minor latency sources remain addressable.

Competitive50–69Noticeable inconsistency. OS settings likely not optimized.

Needs Tuning0–49Significant latency present. Multiple improvements available.

How to Improve Your Score

Set mouse polling rate to 1000 Hz

Use your mouse manufacturer's software (Logitech G Hub, Razer Synapse, etc.) to set polling rate. 1000 Hz reduces worst-case delivery delay from 8 ms to 1 ms.

Switch to High Performance power plan

Settings → System → Power & battery → Best performance. Eliminates CPU core parking that causes random delivery stalls.

Reduce Windows timer resolution

The default 15.6 ms timer quantizes all input scheduling. Reduce to 0.5–1 ms using a timer resolution tool for consistent sub-ms delivery.

Connect mouse to a direct motherboard USB port

Bypass USB hubs. Use a USB 3.0 port directly on the motherboard for dedicated bandwidth and lower interrupt latency.

Set GPU pre-rendered frames to 1

In NVIDIA Control Panel, set Max Pre-Rendered Frames to 1 (or Low Latency Mode to Ultra). This prevents frame queue depth from adding latency on top of input delivery.

Optimize With the Desktop App

Apply all optimizations automatically. InputLag's desktop app manages power plans, GPU settings, and timer resolution persistently — no manual tweaking.

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Frequently Asked Questions

What does this input lag test actually measure?

The Click Consistency test measures the interval timing between repeated click inputs, revealing how consistently your peripheral, USB stack, and OS are delivering input events. High variance indicates latency irregularities in your input pipeline.

What is a good click consistency score?

A consistency score above 80% indicates a well-tuned input pipeline. Scores above 90% are achievable with 1000 Hz polling rate mice on an optimized Windows setup. Below 60% suggests USB bandwidth issues, driver problems, or background CPU load.

How is this different from measuring ping?

Ping measures network round-trip time to a server. This test measures local hardware and OS input delivery consistency — entirely independent of your network connection.

Can I reduce my input lag without new hardware?

Yes. Windows power plan (switch to High Performance or Ultimate Performance), GPU pre-rendered frames (set to 1), and timer resolution (reduce to 0.5 ms) are the three highest-impact software-level changes. The InputLag desktop app manages these automatically.