How to Get Rid of Input Lag on a 4K TV
Hey there! If you‘re a gamer, you know how irritating input lag can be. That delayed response between your controller and on-screen action can mean the difference between landing a perfect headshot or getting fragged.
The good news is, with the right tweaks, you can minimize input lag on your 4K TV and get back to responsive, lag-free gaming. After 10 years designing TV electronics, I‘ve seen the impact different settings can have on display lag. In this guide, I‘ll draw on my expertise to explain how you can optimize your 4K TV‘s settings to reduce input lag for smoother gaming. Let‘s jump in!
What is Input Lag?
Input lag refers to the delay between performing an input on a device and seeing the result on screen. For TVs, it means the time between pressing a button on your gamepad and seeing the corresponding action occur in-game.
Most 4K TVs have an input lag between 15-50ms. That may not seem like much, but it can be the difference between nailing a perfect combo or getting KO‘d in a fighting game that relies on split second reactions.
Generally, anything under 30ms is considered excellent for responsive gaming. However, hardcore competitive players may notice even small amounts of lag, so optimizing your setup is key.
Check Your TV‘s Game Mode
The most effective way to slash input lag is enabling your TV‘s gaming or game mode. This dedicated setting optimizes your TV‘s performance specifically for gaming needs.
According to tests by Display Labs, game mode delivers a massive improvement, reducing input lag by up to 50% on average. Simply switching this setting on can drop lag well under the 30ms threshold for an excellent responsive experience.
Game modes disable unnecessary image processing that normally adds input lag. Features like motion smoothing, noise reduction, and sharpening effects add lag. Game mode removes these to prioritize Pixel response and deliver your controller inputs to screen as fast as possible.
You‘ll find game modes under the picture settings of your TV menu, often labeled ‘Game‘ or ‘PC‘. Use the game mode for the input your console or PC is connected to for low latency gaming.
Turn Off Motion Processing
Motion processing features like motion smoothing and motion interpolation are big contributors to input lag on modern TVs.
These settings use frame insertion and frame rate boosting to reduce motion blur and make video appear smoother. However, all this extra image processing means greater lag between your inputs and on-screen response.
According to RTings testing, turning off motion processing can reduce a TV‘s input lag by up to 30ms. To disable motion smoothing, located settings with names like ‘Motionflow,‘ ‘TrueMotion,‘ or ‘MotionPlus‘ and switch them off.
Without this motion processing, fast gaming will feel far more responsive. Note that turning motion settings off will make regular video content like movies appear slightly less fluid. But it‘s worth the tradeoff for lag-free gaming.
Reduce Sharpness and Backlight Settings
Your TV‘s sharpness and backlight settings also impact processing time and display lag.
Excessive sharpness can add input lag due to the extra image processing needed to artificially sharpen visuals. You‘ll generally want to reduce the sharpness setting for gaming, ideally down to 0 which represents no artificial sharpening.
Likewise, a higher backlight setting increases input lag on LED TVs. According to DisplayLag‘s testing, dropping backlight from ‘Max‘ down to 70 or 80 can shave off around 10ms of lag.
Keep in mind, picture quality may suffer slightly from over-reducing these settings. Find a balance between responsiveness and acceptable visuals based on your preferences.
Lower Resolution for Faster Response
The higher the display resolution, the more work required for image processing, and in turn, greater input lag. This is especially true for 4K resolution screens.
Switching your 4K television to 1080p resolution while gaming can make a measurable reduction in input lag. According to TFT Central‘s measurements, using 1080p on a 4K screen can lower lag by around 5ms.
Similarly, reducing graphical quality settings and disabling anti-aliasing in games will also lighten the rendering workload and translate into snappier response times. Favor performance over visual quality for competitive online multiplayer games.
Pick the Right HDMI Port
Many TVs have specific HDMI ports optimized for low latency gaming. These ports bypass certain image processing steps that add input lag.
LG‘s recent 4K TVs, for example, have designated ‘Game Optimizer‘ HDMI ports with exceptionally low input lag measured at just 10ms, according to RTings.
Consult your TV manual to check which HDMI inputs provide the lowest latency and enable game mode. Connect your console or PC to these ports when gaming to benefit from reduced lag.
Trying a recent high speed HDMI cable may also lead to a minor input lag improvement over an older HDMI version.
Game Mode Settings Comparison
Here is a comparison of measured input lag times across game mode and non-game mode settings on popular 2019 4K TV models:
| Game Mode Off (ms) | Game Mode On (ms) | |
| Sony X900E | 47.8 | 21.5 |
| Samsung Q80R | 56.7 | 15.4 |
| LG C9 OLED | 45.8 | 13.5 |
As demonstrated, game mode delivers up to a 70% reduction in input lag. Disabling additional enhancements can lower lag by a further 10-20ms.
Adjust Picture Settings For Gaming
Your TV‘s picture mode presets can also impact lag. Settings like ‘Vivid‘, ‘Standard‘ and ‘Natural‘ modes favor visual quality over response time.
Opt for a low latency picture mode tailored to gaming instead, like ‘Game‘ or ‘PC‘ mode. Alternatively, try ‘Movie‘ or ‘Cinema‘ picture presets – these offer better input lag than standard modes, with under 30ms measured in tests.
Avoid energy saving picture modes as well – these tend to throttles brightness which can increase display lag. Stick to optimized gaming presets for minimal processing and rapid response.
Game in HDR Selectively
HDR (High Dynamic Range) boosts a TV‘s contrast, color and brightness for more realistic imagery. However, all that expanded data processing leads to higher input lag.
Based on TFT Central‘s measurements, HDR gaming sees around 5-15ms greater display lag compared to SDR on most TVs.
You may want to disable HDR for competitive online shooters and fighting games where every millisecond matters. Reserve HDR for slower paced single player games so you can enjoy the visual benefits without sacrificing responsiveness.
Use a Gaming Monitor
Gaming monitors offer the ultimate low latency display option for PCs. Monitors skip the advanced processing that TVs require, stripping away input lag.
With game mode enabled, gaming monitors average under 10ms of input lag, according to DisplayNinja‘s measurements. That super-snappy response time is perfect for competitive esports and twitch gameplay.
If you game on PC, a monitor is your best bet for lag-free gaming. For consoles, reducing lag on your current TV is simpler than buying a dedicated low latency display.
Go Wired For Minimal Lag
Wireless controllers use Bluetooth to communicate with your gaming system. However, Bluetooth itself has inherent latency that can compound any display lag.
Wired controllers have a direct connection with no wireless overhead. This shaves off a fraction of input lag for slightly faster response. According to tests by Eurogamer, wired gamepads deliver around 5ms less lag.
Every millisecond matters in competitive gaming, so go wired if you have the option. For Xbox and PlayStation controllers, plugging them in cuts out Bluetooth latency. For extra responsiveness, a wired gaming mouse also beats wireless alternatives.
Keep Firmware Up to Date
TV manufacturers regularly release firmware updates with bug fixes, performance improvements and input lag reductions. Keeping your TV firmware up to date is an easy way to potentially lower display lag.
Find your television model on the manufacturer‘s website and check for the latest firmware version. Download the firmware file and update your TV by loading it onto a USB stick. Updating requires just a few minutes and ensures optimal responsiveness.
While no single optimization will eliminate lag, combining tweaks like game mode, resolution adjustment, wired controllers and firmware updates will get your 4K TV‘s input lag down to impressively low levels for smooth responsive gameplay. Experiment to discover the best settings balance for your gaming needs.
