How to Reduce Input Lag on PC: Display, Sync and Settings

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You click, and the shot fires a moment later than it should. You move the mouse, and the crosshair seems to trail your hand. The frame rate is high and the picture is smooth, yet the game feels heavy, as if your inputs have to travel through syrup. That delay between your action and what you see on screen is input lag, and it matters in every kind of game, from competitive shooters and fighting games to rhythm games and fast platformers.

Input lag is not caused by one thing. It is the sum of many small delays along a chain that starts at your fingertips and ends at your eyes. This guide breaks that chain into links, explains what each link costs, and gives you a practical, ordered way to reduce the delay without buying new hardware first. It is based on general PC and display knowledge rather than lab measurements of specific products, so treat the figures as rough scales and confirm model-specific details with the maker.

By the Reviewstook Editorial Team. Last updated: November 1, 2026.

What Input Lag Actually Is

Input lag, often called input latency, is the time from an action, such as pressing a mouse button, to the visible result on your display. People often confuse it with other terms:

• Frame rate (FPS) is how many images the game draws per second. High FPS usually lowers latency but does not guarantee it.
• Refresh rate is how many times per second the monitor can update the picture. A higher refresh rate lets new frames appear sooner.
• Response time is how quickly pixels change color. It affects blur and ghosting, not the delay between your input and the display starting to update.
• Network latency (ping) is the delay between your PC and a game server. It is separate from input lag on your own system, though both add together in online games.

The total felt delay in an online game is roughly the delay on your PC plus the network delay plus the server’s processing time. This guide focuses on the part you control directly: the delay inside your own setup.

The Latency Chain: Where Time Goes

Think of every action as a relay race. Each runner adds time, and you can often shorten several of them.

The numbers are intentionally vague because they depend on the specific hardware and game. What matters is the structure: delay accumulates at every stage, and there are usually several stages you can improve cheaply.

Why Frame Rate Is the Biggest Lever

Every frame has to be processed and drawn before you can see the result of an input. At 60 frames per second a new frame appears roughly every 16.7 milliseconds. At 144 it is about 6.9 milliseconds, and at 240 about 4.2 milliseconds. The faster frames arrive, the sooner a new input can appear in a frame.

That is why competitive players chase high frame rates even on 60 Hz displays, and why raising frame rate often lowers input lag more than any single setting. It also explains why a stable frame rate matters. If frame times spike, input lag spikes with them. Our guide to fixing stuttering in PC games shows how to diagnose and smooth frame times.

If you cannot reach a high frame rate, lower the settings that hit your processor or graphics card hardest. Shadows, view distance, ray tracing and crowd density are common culprits. Trading some visual detail for steadier, faster frames is the quickest way to lower latency.

Step 1: Start With the Display

The monitor or TV is the last link, and for many people the biggest source of avoidable delay.

Set the correct refresh rate

High refresh rate monitors often default to 60 Hz. Open your operating system’s display settings, go to the advanced display options and choose the highest refresh rate your monitor supports. This is the most common and simplest fix. Our refresh rate guide explains how to check it, and our gaming monitor buying guide covers what to look for when buying.

Turn off extra image processing

Many displays, especially TVs, apply processing such as motion smoothing, noise reduction and sharpening. Each step adds delay. Look for a game mode or low-latency mode in the display menu, which disables most of the processing. On a TV this can cut a large amount of latency.

Use the right connection

Use DisplayPort or HDMI at the version your display supports, with a cable rated for the resolution and refresh rate you want. A poor cable can force a lower refresh rate or cause dropouts.

Consider variable refresh rate

FreeSync and G-SYNC let the display match the game’s frame rate, so you can avoid tearing without the delay that traditional vsync adds. Enable the feature in both the monitor menu and the graphics driver. If you are shopping, our gaming monitor list and 240 Hz monitor list compare options.

Use native resolution

Running below the display’s native resolution forces scaling, which can add delay and blur the picture. Use the native resolution unless you have a reason not to.

Step 2: Sync Settings and Frame Caps

Synchronization settings decide how finished frames reach the display. They often matter more than people expect.

Vertical sync (vsync)

Traditional vsync holds a frame until the display is ready for it, removing tearing but adding delay, because frames may wait up to a full refresh interval, and sometimes a queue of frames builds up. For latency-sensitive games, turning it off is common advice, with the trade-off of visible tearing.

Variable refresh rate with a frame cap

A popular balance is to use variable refresh rate and cap the frame rate a few frames below the monitor’s maximum refresh rate. For example, on a 144 Hz monitor, a cap around 140 keeps the game inside the variable refresh range, so it does not hit the vsync ceiling and avoids the extra delay. Capping also keeps frame times consistent.

Low-latency modes in the driver

Graphics driver software offers low-latency features that limit how many frames the processor queues up before the graphics card draws them. Some games add their own low-latency options, such as vendor-specific modes, which synchronize the processor and graphics card to reduce the queue. If your game and graphics card support one, try it and compare how the game feels. Results differ by game, so test rather than assume.

Fullscreen versus borderless

Modern Windows handles borderless windowed games well, but some games still have lower latency in true fullscreen modes. If a game offers both, test them. Closing overlays that hook into the game can also help.

Step 3: Peripherals and Connections

Your mouse and keyboard are the first link. Small improvements here cost little.

Wired or 2.4 GHz wireless

Wired connections and modern 2.4 GHz wireless dongles have very low latency. Bluetooth connections often add more delay and are less consistent, so they are better for casual use than for fast games. If you use a wireless mouse for gaming, choose a model with a dedicated 2.4 GHz receiver. Our wireless gaming mouse list compares options.

Polling rate

The polling rate is how often the device reports to the PC. A 1000 Hz mouse reports every millisecond. Higher rates, offered by some mice, shorten the reporting interval further but use more processor resources and give diminishing returns. A common sweet spot is 1000 Hz, with higher rates mainly benefiting players with very fast hardware and displays.

Where you plug in

Use a direct USB port on the motherboard’s back panel for your mouse and keyboard. Overloaded hubs, long extension cables and ports shared with busy devices can add delay or cause hiccups. Avoid plugging a high-polling-rate mouse into the same hub as a webcam or a storage drive.

Controller connections

For gamepads, a wired connection usually has lower and more consistent latency than Bluetooth. A 2.4 GHz dongle can be close to wired. Our PC controller list compares wired and wireless options.

Mouse settings

Turn off mouse acceleration for games, and use raw input if the game offers it. This does not reduce hardware latency, but it makes aim feel consistent, which people sometimes confuse with lag.

Step 4: Windows and Driver Settings

Operating system and driver settings can add or remove small amounts of delay.

• Game Mode. Windows includes a Game Mode that prioritizes games. It helps on some systems and does little on others. Test it on and off.
• Power plan. A power-saving plan can reduce processor speed and add delay. Use a balanced or high performance plan on a desktop, and keep a laptop plugged in.
• Graphics driver. Keep the driver current. A clean installation can remove leftover settings from older versions.
• Hardware-accelerated GPU scheduling. This Windows option changes how the graphics card schedules work. Effects vary, so test it.
• Overlays and background apps. Chat overlays, recording tools and monitoring utilities add small delays and sometimes cause hitches. Close what you do not need.
• Background recording. Always-on recording features use encoder and storage resources. Turn them off to test.

Change one setting at a time and judge by feel and, if you can, by measurement. Many of these changes make little difference on a well-configured PC.

Step 5: Graphics Settings That Cut Latency

If your frame rate is limited by the graphics card, the settings inside the game matter.

• Lower resolution or use upscaling features where available to raise frame rate.
• Reduce heavy effects such as ray tracing, volumetric lighting and high shadow quality.
• Turn off motion blur, which also reduces clarity in fast games.
• Reduce the render queue or pre-rendered frames if the game or driver exposes it.
• Be careful with frame generation features. They can raise the displayed frame rate but may add delay compared with native frames, so test them in latency-sensitive games.

The aim is a high, steady frame rate that your processor and graphics card can sustain, not the highest number for a moment.

Step 6: Network Latency in Online Games

If you play online, ping adds to what you feel. Lowering it does not change local input lag but improves responsiveness in play.

• Use a wired Ethernet connection instead of WiFi when possible.
• Choose the nearest game server.
• Pause large downloads and streams on your network while playing.
• Restart your router if you notice sudden spikes.
• Use a router with good quality-of-service tools if many devices share your connection. Our gaming router list compares models.

Ping and input lag stack, so a low-lag PC on a bad connection will still feel poor in an online match.

How to Measure Instead of Guess

Feel is useful, but measurement removes doubt.

• Software overlays. Some graphics driver tools and games display system latency or render latency numbers. These measure part of the chain, not the whole.
• High-speed camera tests. Filming a mouse click and the screen with a high-speed phone camera lets you count frames between click and response. It is rough but works for comparing before and after.
• Dedicated latency tools. Specialized devices measure click-to-photon latency precisely. They are overkill for most people.
• A/B testing. Change one thing, play the same scenario for several minutes, and compare how it feels, ideally switching back and forth.

Be careful with placebo. It is easy to feel an improvement after a change simply because you expect one. Repeated blind-style tests, even informal, give more reliable answers.

Order of Operations

1. Set the monitor to its highest refresh rate and native resolution.
2. Turn on game mode and disable extra processing on the display.
3. Raise and stabilize the frame rate by adjusting in-game graphics settings.
4. Choose your sync approach: variable refresh rate with a frame cap, or vsync off.
5. Enable available low-latency modes and test them.
6. Use a wired or 2.4 GHz mouse and keyboard on direct USB ports.
7. Check Windows power plan, drivers and background software.
8. For online games, move to a wired network and reduce network load.
9. Measure or A/B test before spending money on new hardware.

When Hardware Is the Real Limit

Upgrade only where your evidence points. A faster graphics card will not fix a TV that adds 60 milliseconds of processing delay.

Common Mistakes

• Leaving a high refresh rate monitor at 60 Hz.
• Using a TV without game mode for fast games.
• Capping the frame rate at the monitor maximum with traditional vsync on, which can queue frames.
• Chasing every tweak in forums without measuring.
• Using Bluetooth peripherals for fast competitive play.
• Judging latency by FPS alone.
• Running too many overlays and recording tools.
• Ignoring network latency in online games.

Frequently Asked Questions

How much input lag is too much?

There is no universal line. Many players notice delay above roughly 30 to 40 milliseconds of total system latency in fast games, and competitive players try to keep it much lower. Your tolerance depends on the game and your sensitivity.

Does a higher refresh rate reduce input lag?

Generally yes, if your PC produces frames to match. Each refresh interval is shorter, so new frames appear sooner. It does little if your frame rate stays low.

Is response time the same as input lag?

No. Response time is how fast pixels change color. Input lag is the delay between your action and the display responding. A monitor can have fast pixels and still add display processing delay.

Should I turn vsync off for lower latency?

Turning it off usually reduces delay but allows tearing. Many players prefer variable refresh rate with a frame cap, which avoids most tearing without the vsync penalty.

Are wireless mice laggy?

Modern 2.4 GHz wireless gaming mice have latency close to wired models. Bluetooth is generally slower and less consistent.

Does a better graphics card lower input lag?

It can, by raising and stabilizing the frame rate, but it will not fix display delay, network lag or peripheral problems.

Is frame generation bad for input lag?

It can raise displayed smoothness while adding some delay compared with native frames. Test it in latency-sensitive games and compare.

Does a TV have more input lag than a monitor?

Often yes, particularly without game mode. Many modern TVs have good low-latency modes, so check the display menu and reviews for the model you own.

Bottom Line

Input lag is the sum of many small delays, and most people can cut it without buying anything. Start at the end of the chain: set the right refresh rate, enable game mode and choose sensible sync settings. Raise and steady the frame rate, use wired or 2.4 GHz peripherals, tidy up Windows and drivers, and fix network issues for online play. Measure or A/B test your changes, and upgrade hardware only when the evidence shows the display, processor, graphics card or connection is the real limit.

Related Reading

• Monitor Refresh Rate Explained: 60Hz vs 144Hz vs 240Hz
• Gaming Monitor Buying Guide
• Fix Stuttering in PC Games
• Best Gaming Monitors
• Best Wireless Gaming Mice
• Best Gaming Routers
• All Monitor guides