You click, and a fraction of a second later, your character finally shoots. In a fast game, that fraction is the difference between winning a duel and losing one. Input lag is the total delay between your action and the result appearing on screen, and it comes from your mouse, your PC, and your monitor all adding their own small delays together. The good news is that most of it is fixable with settings, not new hardware, and the fixes take minutes. Here is how to cut your input lag down step by step.

Your monitor is the biggest single source of input lag, and its settings are the fastest fix. Start by enabling Game Mode or Low Latency Mode in the monitor's on-screen menu. This disables post-processing features like motion smoothing, dynamic contrast, and edge enhancement, which can add 10 to 30 milliseconds of delay. Then set your monitor to its maximum refresh rate in Windows display settings. At 60Hz, each frame takes about 16.7 milliseconds to display. At 144Hz, that drops to about 6.9 milliseconds, and at 240Hz it is roughly 4.2 milliseconds. That difference alone is larger than most other fixes combined.

Next, check your connection and your sync settings. Use DisplayPort on PC where possible, because it supports the highest refresh rates without compression. Enable G-Sync or FreeSync in both the monitor menu and your GPU software, and turn off traditional V-Sync in games, because V-Sync forces the GPU to wait for the monitor and adds noticeable delay. Set your monitor overdrive to a medium level rather than the maximum, because the highest setting can cause inverse ghosting that looks like lag. These three changes, Game Mode, maximum refresh rate, and adaptive sync, fix most monitor lag in under five minutes.

Your GPU and Windows settings are the second place lag hides. If your game supports NVIDIA Reflex or AMD Anti-Lag, turn it on, because these features synchronise the CPU and GPU so the GPU never gets too far ahead, which cuts render-queue delay without reducing visual quality. In supported games, Reflex set to On plus Boost gives the lowest latency. Also cap your frame rate a few frames below your monitor's maximum refresh rate, for example 237 FPS on a 240Hz monitor. This prevents the render queue from building up, which is one of the biggest hidden sources of input lag.

In Windows, enable Hardware-accelerated GPU Scheduling in the graphics settings, and turn on Game Mode so Windows prioritises your game over background tasks. Set your mouse and keyboard polling rate to 1000Hz, which is the standard for gaming peripherals and means your inputs are read every millisecond. Close your browser and pause downloads before you play, because background apps compete for CPU and storage. If you play on a laptop, plug it in and use the high-performance power plan, because power saving adds latency by throttling your hardware at the worst moments.

The only way to know your fixes worked is to measure. Many competitive games, including Valorant, Apex Legends, and Fortnite, have built-in latency displays or support NVIDIA's Reflex Latency Analyzer, which measures the delay from mouse click to pixel change on screen. Check your latency before and after each change, and keep only the changes that actually help. A good target for a competitive setup is under 25 milliseconds of total system latency, and the best setups get well under 15. Do not chase zero, because some delay is unavoidable, and the difference between 12 and 10 milliseconds is not something any human can feel.

Once your latency is in a good range, stop tweaking and go play. The players who improve fastest are the ones who set their system up once, properly, and then spend their time practising instead of changing settings every week. Input lag matters, but it matters most when it is bad. Fix the big sources, measure the result, and then let your aim and your game sense do the rest.

Input lag is a chain, and every link adds delay. Enable Game Mode, run your monitor at full refresh rate, turn on Reflex or Anti-Lag, cap your frame rate just below the maximum, and measure the result. Most players can cut their latency in half with settings alone.