How to Reduce Input Lag on PC for Gaming (2026 Guide)

Input lag is the time between pressing a key or clicking your mouse and seeing it happen on screen. A few milliseconds here and there add up: a PC with every default left on can feel floaty even at a high frame rate. The good news is that most of it comes from settings, not hardware.

Work through these in order. The first steps make the biggest difference.

1. Cap your frame rate just under your refresh rate

When your GPU runs at 99-100% usage, frames queue up and latency jumps. Capping FPS a few frames below what your GPU can hold keeps the queue empty.

• Use the in-game frame cap if the game has one (it adds the least delay).
• With G-Sync or FreeSync, cap about 3 FPS under your monitor's refresh rate (for example 141 on a 144 Hz screen).
• Turn on NVIDIA Reflex (On + Boost) or AMD Anti-Lag in games that support it.

2. Turn off V-Sync and triple buffering

V-Sync waits for the monitor before showing a frame, which can add a full frame or more of delay. Turn it off in game. If you use G-Sync or FreeSync, the common setup is V-Sync on in the driver, off in game, plus the frame cap from step 1.

3. Use fullscreen and the right monitor settings

• Play in exclusive or borderless fullscreen with Optimizations for windowed games on (Settings > Display > Graphics).
• Check Windows is actually using your monitor's top refresh rate: Settings > Display > Advanced display > Choose a refresh rate.
• Use DisplayPort or the HDMI port your monitor's manual lists for high refresh. A wrong port can lock you to 60 Hz.

4. Set Windows power to performance

Balanced power plans let the CPU drop to low clocks and wake up slowly. Pick Best performance (Settings > System > Power) or the High/Ultimate Performance plan on desktops. Laptops should be plugged in while gaming.

5. Lower mouse and USB delay

• Set your mouse to 1000 Hz polling or higher in its software.
• Turn off Enhance pointer precision (Control Panel > Mouse > Pointer Options).
• Plug the mouse straight into the PC, not a hub or the front panel if you can avoid it.

6. Cut background load

Overlays, launchers, RGB apps and updaters all fight your game for CPU time. Close what you don't need, turn off Xbox Game Bar captures you don't use, and keep startup apps short (Task Manager > Startup apps). This is where a debloat helps the most, see our Windows 11 debloat guide.

7. Check the network side (online games)

Some "input lag" in online games is really ping and jitter. Use a wired connection, close downloads while playing, and pick the closest game server. If your ping jumps around, that feels like delay even when your PC is fast.

How to tell if it worked

NVIDIA's overlay (Alt+R with Reflex) shows PC latency in milliseconds. Note the number before you start, change one thing at a time, and keep what lowers it. Frame time (not just FPS) should also be flatter.

The short version

Frame cap plus Reflex or Anti-Lag, V-Sync off, real fullscreen at your top refresh rate, performance power plan, 1000 Hz mouse, and a clean Windows install. That covers most of the delay most players feel.

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