Factors Affecting PC Monitor Responsiveness 2022

Factors Affecting PC Monitor Responsiveness. Usually, come from a general set of rules and factors like good resolution and good image quality. If we ask a gamer or designer of some sort, they might even plunge into details like refresh rate or pixel resolution. For a layman,  what are the factors that define a monitor’s motion performance? can be difficult to find.? There is no ideal solution to what affects the responsiveness of a monitor.

Factors Affecting PC Monitor Responsiveness

Response time of monitors is the time it takes to change from one color to another. This is usually measured in the time it takes to go from black to white back to black expressed in milliseconds ms. However, there is also gray to gray GtG and sometimes even black to white.

Input lag

When it comes to responsiveness, input lag plays a big role. Input lag is the delay or difference usually measured in milliseconds between the graphics card sending a frame to the monitor and the monitor displaying that frame.

This signal lag is small, but a low input lag leads to a faster feel when interacting with the screen using an input device such as a mouse or controller. 144hz monitor.

Common Causes of Input Lag

Signal processing is performed more extensively on some models than on others. And sometimes, it results in signal delay. High-end displays sometimes use internal scalars to process non-native resolutions. In some cases, the signal must pass through a scalar even if it doesn’t need to be scaled. This may result in a delay.

The process

As we can see, the 60 Hz monitor shows a progression of one frame of information between Frame 1 Red dot and Frame 2 yellow dot. Now, during the same 16.67 ms time, the 120 Hz monitor has already progressed two frames, displaying Frame 2 after 8.33 ms and going to Table 3 green dot.

In practice, what this means is that in the case of a 120Hz monitor, the visual fluency of scenes is increased and the level of blur is greatly reduced. The monitor also responds at twice the speed of a 60Hz monitor, to user commands and input updates as if using a mouse, resulting in superior performance and appearing faster than a monitor. normal.

This is combined with a low input lag monitor with a high refresh rate is very popular with gamers and people who work with 3D structures. And when alternative technologies like OLED become mainstream in the not-too-distant future, the demand for these monitors will continue to rise.

LightBoost and strobe backlights.

NVIDIA 3D LightBoost is a technology introduced in 2011 as part of the NVIDIA 3D Vision 2 system. LightBoost is designed to improve image presentation quality on LCDs when viewing 3D content with shutter glasses.

However, LightBoost can also be a huge advantage when viewing 2D content without shutter glasses, as it helps reduce motion blur. Meanwhile, most current gamer monitors support some form of strobe backlighting to serve the same purpose as 2D LightBoost. Different manufacturers use different names for basically the same thing, like MBR Motion Blur Reduction BenQ, ULMB Ultra Low Motion Blur, part of G-Sync, Motion240 LG, etc.

Although LightBoost is a pure monitor function, it can only be activated officially with NVIDIA graphics hardware, but since 2D LightBoost is becoming more and more popular in gamer circles, ways have been found to activate LightBoost also without the need for additional NVIDIA 3D equipment see LightBoost Utility, but note that this utility does not work with the new Z series of BenQ monitors.

Strobe backlights.

On a monitor such as an LCD screen, the backlight is always on. The strobe backlight works like a CRT where the strobe backlight adjusts to the movement of the screen. It reduces stress on the eyes and often reduces motion blur as well.

Read also: How to Buy a PC Monitor: Few things to consider Easy Guide 2022

Motion blur occurs because the pixel doesn’t change colorfast enough. With a strobe backlight, the pixel doesn’t always light up like a normal backlight, causing the pixel change to occur faster

Run the monitor on its native screen.

Some manufacturers give their PC monitors dedicated code that bypasses most of the signal processing.
On some PC screens, there is a game preset or instant or through mode that can be activated via the on-screen display OCD.

To measure signal delay accurately, specialized equipment such as a photodiode and an oscilloscope is required. It helps to determine only the delay of the signal rather than the overall latency. And SMTT Small Monitor Test Tool is a useful tool to measure the difference between input lag and chosen display.

 Users also use a stopwatch to measure the delay. Methods like these can help measure input lag and give us a visual representation of what it is.

Methods like these give us a visual representation of the output of a screen. As you can see in the image above. there is a visible delay as to when the values ​​are changed.

The result of such methods is also affected by pixel transitions response time. Pixel response affects visual latency not felt latency and sometimes when included on some websites, users may refer to it as input lag. Here’s what to keep in mind about response time and pure signal delay:

PWM  use pulse width modulation

PWM is used in many applications, from communications to control and power conversion. For example, PWM is commonly used to control the speed of electric motors, the brightness of lights, in ultrasonic cleaning applications, and many more.

The response time mainly affects the appearance of the monitor.
The signal delay affects the responsiveness of the monitor.

Update frequency

Refresh rate is responsible for making a screen look nice and fast to the end user’s eyes. It can be divided into two types one is fixed and the second is a variable 144hz screen.

Fixed update rate

Best gaming monitor 144hz monitor Under their native resolution, most LCD monitors run at a refresh rate of 60hz. What does that mean? This means that up to 60 individual data frames can be displayed per second with a 16.66ms gap between these frames.

It is possible to modify this value to some extent, but the value must be pre-selected since a normal monitor cannot adjust its refresh rate on the move.

However, there are a select few LCDs that run at their native resolutions at 120Hz refresh rate, and sometimes even 144Hz. Unsurprisingly, a 120Hz refresh rate allows these monitors to display twice the information, generating up to 120 discrete frames per second with an 8.33ms gap between frames.

Variable refresh rate

The relationship between refresh rate and frame rate is as close as the relationship between a monitor and the rest of the system. To get the most benefit from your frame rate, you need to keep your refresh rate high. To prevent the frame rate from exceeding the refresh rate, some users use VSync.

In simple terms, this is done to ensure that the Graphics Processing Unit sends new frames to a monitor only when the monitor is ready to go through its next refresh cycle. The GPU keeps the frames this way, and as a result, what happens is the following:

  • An inherent delay occurs, which is in addition to the overall input delay. As the refresh rate increases, this penalty becomes less severe. but it still exists.
  • On some occasions, the frame rate drops below the monitor’s refresh rate, at which point you may get a degree of stutter.
  • This happens due to a situation where the screen has finished drawing a frame and is ready to move on to the next frame, but the GPU is not ready to send it.
  • In such a scenario, the GPU sends the first frame back to the monitor (instead of sending a new one). This results in the monitor redrawing that frame, or a stutter.
  • Many gamers disable VSync to minimize latency and stutter as much as possible. However, any time the frame rate doesn’t match the refresh rate, things get out of sync. And this is something that happens quite frequently. Monitors are normally updated from top to bottom
  • . In this scenario, a new frame is displayed only on the top half of the screen, while the bottom half of the monitor still displays the old frame. The occurrence is distinct and distracting and is called a tear.
  • The tearing is what can lead some users to resort to VSync. However, NVIDIA came up with a solution. An alternative is called G-SYNC.


The chip shown above has one function: to match the refresh rate of the screen to the frame rate of the content (for example, a game), in real-time. This chip can only be used on a limited number of monitors, and most of the time, it comes pre-installed in them.

Advantages of G-SYNC

G-SYNC gives the user all the traditional benefits of having VSync enabled without any accompanying issues.
This is a chip that automatically takes care of the refresh rate issue and produces better image quality and a smoother frame rate per second.
Free Sync

AMD also has a variable refresh rate technology by the name FreeSync. Unlike G-Sync, however, FreeSync technology doesn’t require the kind of specialized hardware that needs to be inside the monitor.

Advantages of FreeSync

The latest iterations of FreeSync are designed to work over HDMI on specific monitors.
This technology is becoming very popular and there are more and more FreeSync monitors on the market, such as the BenQ XL2730Z and the BL3201PT/PH. to give you faster-moving visual performance.

Top Asked FAQ of Factors Affecting PC Monitor Responsiveness

What is the monitor response time?

When choosing a new monitor, there are many factors to consider. Size and resolution are great to start with, but other features like refresh rate, panel, aspect ratio, and response time can also affect your experience. Response time in particular is often overlooked when discussing monitor features, but it’s important.

How can I improve my monitor response time?

Increasing your monitor’s overdrive setting it’s called different things for different brands will reduce average response time but increase reverse ghosting. This means that the overall motion blur will be reduced marginally, but will be darkened at the same time.

Does monitor response time affect performance?

Unfortunately, the performance of your monitor is still up to the whim of the manufacturer that produces it. In theory, lower response times should always be better and reduce image ghosting, but the type of panel used and its quality will still be factors.

Why is my monitor so laggy?

Resolution discrepancies can also cause lag and flickering, check that the resolution is set for each display and that it is the monitor’s native resolution. Sometimes hardware acceleration by certain programs can also cause secondary display lag and make sure all your drivers are up to date.

What is monitor latency?

Monitor latency or display lag or input lag is the measured time or difference between the signal input and the time it takes for the sent input to appear on the screen. The figure can be as high as 68ms, which corresponds to roughly 3-4 frames on a monitor with a 60Hz refresh rate.

If you’re using a console setup, then the signal delay that defines monitor latency starts in your controller. It then goes through your PS4 or XBOX device, goes through the HDMI/VGA cable, into your monitor, makes its way through the processor in your monitor, and finally into the pixels.

Any deficiency in any of the stages described or any mishaps you encounter along the way will make your crosshair less responsive, and this event increases the amount of time required for the input to manifest on screen.

How do I reduce the latency on my monitor?

Display latency can be broken down into three main parts: scanning, display processing, and pixel response. If you want to optimize display latency, here are a few things you can do: Enable your maximum refresh rate: Make sure your display is set to the maximum refresh rate. Higher Hz reduces scan-out latency.

What is a good pixel response time?

The time it takes for a pixel on the screen to change color. Measured as a change from black to white or from one shade of gray to another, the response time of a fast pixel is one millisecond 1 ms  See LCD categories, pixel, and response time.

Is the backlight strobe good?

The strobe backlight will work best at a lower refresh rate than your monitor’s maximum refresh rate (120Hz strobe on a 144Hz monitor, 144Hz strobe on a 240Hz monitor, etc. Another downside to using MBR (besides not being able to use VRR on most monitors is reduced image brightness.

Does MBR cause input lag?

In general, it is recommended not to use it. It doesn’t support adaptive sync, so you’re probably not using it with a good GPU, and it causes reverse ghosting on lower frames, in tests I’ve seen. MBR is for stuff at 240fps locked.

Does ULMB work at 240Hz?

ULMB reduces brightness by about 12% if you start with 200 nits. The brightness can be increased to compensate. It only works up to 240Hz, but it does make a visible improvement in motion resolution.

How is motion blur quantified?

The movement across the frame is the movement during the exposure divided by the width of the image. If the subject is moving at 10 per second and the field of view is 600 wide (50 feet), then the subject is moving 1/60th of the frame per second. Multiply this by your shutter speed to get motion blur per exposure.

What is the purpose of the sample and hold circuit?

The main function of a sample and hold S/H circuit is to take samples of its input signal and hold these samples at its output for some time. Samples are usually taken at uniform time intervals; therefore, the sampling rate or clock rate of the circuit can be determined.

What are the applications of the PWM modulation technique?

Other applications use PWM technology, including:

  • Drive buzzer with different volume
  • Check engine speed
  • Control the direction of a servo
  • Provide an analog output
  • Generate audio signal
  • Telecommunications: Encode message

Finally: If you want to judge the responsiveness of a monitor, hard work is mandatory, as manufacturers usually give us very little to go by. The specifications provided to us have the gray to gray response time, and these response time values ​​are significant.

But as we’ve established in the article, the reason you should look beyond the single value specified by the manufacturer is that many factors affect a PC monitor’s responsiveness. In addition to response time, refresh rate is also an important factor to consider.

Also, these two intertwine, forming a key part of how well your monitor will handle motion. Another important factor is input lag, which primarily affects how a monitor feels in response to user input.

The point is that manufacturers do not usually specify all these factors. What can become more confusing as a buyer is that some of these terms are used loosely and finding accurate information can be difficult. Therefore, before spending your hard-earned money on a monitor.

It is essential to do some research and look at all these factors closely. A good monitor requires certain values ​​that you must take into account. And with all of these factors covered in this article, we hope your search ends here.