Input lag is the delay between pressing a key or moving your mouse and seeing the result on screen, and in online games it can make the difference between a hit and a miss. Some lag comes from your internet connection, but a surprising amount comes from your own setup, and fixing the local side first is free, fast, and often more effective than upgrading your connection.

Start by measuring what you actually have. Many games show network latency and frame time in their settings, and those two numbers tell different stories. High network latency points to your connection or the server, while high frame time points to your PC struggling to render the game. If both are fine and the game still feels sluggish, the culprit is often display lag or a setting like vertical sync adding extra frames of delay.

Your display settings are the first place to look. Turn off vertical sync in competitive games, because it forces the game to wait for the monitor's refresh cycle and adds noticeable delay. If your monitor supports a variable refresh rate, use it instead, as it smooths the picture without the same penalty. Set your monitor to its highest refresh rate in both the operating system and the game, since a monitor left at 60Hz silently caps everything else you do.

Graphics settings come next. Reduce settings that add render delay, such as high-quality shadows, motion blur, and post-processing effects, until your frame rate is stable and high. Enable any low-latency mode your graphics card offers, which reduces the number of frames the GPU prepares in advance, and cap your frame rate just below your monitor's maximum if you notice tearing. The goal is a fast, consistent pipeline from input to screen, not the prettiest picture.

Peripherals add lag too, though less than they used to. A wireless mouse or keyboard with a low polling rate can add several milliseconds, so competitive players should use devices with a high polling rate and keep their firmware updated. Wired connections remain the safest choice for tournaments, and a cluttered USB hub or a dying battery can cause the kind of intermittent lag that is maddening precisely because it comes and goes.

For network lag, the biggest wins are unglamorous: use a wired Ethernet connection, choose the closest game server region, and close background applications that upload data, such as cloud backups and automatic updates. Restarting your router before a long session clears stale connections, and if your latency spikes every evening, the problem may be congestion on your internet plan rather than your setup. In that case, a conversation with your provider, or a plan with better peak-time performance, is the real fix.

One last check is your operating system itself. Game mode, background recording, and overlay software from chat apps or graphics tools can all add small amounts of delay or cause frame stutters, and disabling them for competitive sessions is free. Keep your graphics drivers updated, but avoid installing a brand-new driver on tournament day, since a fresh driver can occasionally introduce new issues. Stability, not novelty, is what competitive settings should optimise for.

Testing your fixes properly is the step most players skip. Change one setting at a time, play several matches, and note whether the game actually feels more responsive, because changing five things at once makes it impossible to know which one helped. Keep a simple log of your settings and results, and revert any change that made no difference, since unnecessary tweaks add complexity without benefit. Systematic testing feels slow, but it is how you build a setup that stays fast and stable for months instead of breaking every time a game updates.