Technical Reference

Responsiveness Guides

Technical deep-dives on input lag, frame pacing, peripheral optimization, and Windows tuning — built for competitive players who want to understand and measure every millisecond.

8Guides
66 minTotal read time
26FAQ answers
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Fundamentals

3 guides
Fundamentals8 min read

What Is Input Lag?

Input lag is the total delay between a physical input and its on-screen effect. Learn the full system latency chain, how it's measured, and what numbers actually matter for competitive gaming.

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Fundamentals6 min read

Input Lag vs Ping — What's The Difference?

Input lag and ping are both latency metrics but they measure completely different things. Learn why confusing them leads to wrong optimizations — and how to address both for competitive gaming.

input lagpingnetwork latency
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Fundamentals7 min read

Input Lag vs FPS — How Frame Rate Affects Latency

Higher FPS directly reduces input lag — but not in the way most players think. Learn the exact math behind frame delivery latency, why 240 FPS isn't just cosmetic, and where the gains stop mattering.

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Optimization

2 guides

Diagnostics

2 guides

Peripherals

1 guide

Benchmark Your System

Put what you've learned to work. Run the full Responsiveness Lab and see your scores.

Apply It All Automatically

InputLag's desktop app implements every optimization in this guide — and keeps them active.