Fix Dual Monitor Lag In Windows [Explanation For Beginners]

I’ve been using dual monitors for a few years now and it is a great productivity boost. The problem is that it doesn’t always run smoothly.

A dual monitor setup usually involves one monitor being set to the primary task, while the other monitors are left running in the background for secondary tasks. If these tasks are done in windows, the lag between the two monitors can be very noticeable.

And have you ever been playing a game on one monitor, and the other one starts lagging? It’s frustrating, and not only does it distract you from the game, but it also makes it difficult to play at all.

But don’t worry;

In this guide, we will show you how to fix dual monitor lag in Windows, including lag that is caused by the following:

* Hardware

* Software

* Driver issues

We will also explain how to prevent these issues from happening in the future.

What is dual monitor lag in Windows?

The dual monitor lag occurs when two monitors are connected to the same PC. The issue is very common, especially with high-end laptops. It is also possible to use multiple monitors on a single PC and have lag. How To Flatten A Mousepad?

Here are the main causes of dual monitor lag in Windows:

There can be various causes of dual monitor lag and here I am sharing the main causes of dual monitor lag in Windows.

Poorly installed graphics card

The graphics card is responsible for handling the graphics and images and it is the most important component of a laptop. If the graphics card is not installed properly then it can cause dual monitor lag.

Poorly installed RAM

RAM is short for Random Access Memory and it is the most important component that is responsible for storing and managing the data. If the RAM is not installed properly then it may lead to dual monitor lag.

Slow processor

The processor is the heart of the computer and it is the most important component that is responsible for processing the information. So, if the processor is not working properly then it can also lead to dual monitor lag.

Unstable power supply

Power is the most important aspect of a computer, without it, nothing can work. If the power is unstable or the power supply is faulty then it will lead to dual monitor lag.

5 Ways to Fix Dual Monitor Lag Windows

When we use two monitors for our PCs, we expect that we can access our applications and the programs with ease. However, dual monitor lag is a big problem that keeps us irritated and disappointed. If you are facing this issue then here are the best ways to fix it.

Use a Screen Capture Tool

A screen capture tool is software that will allow you to record any screen of your computer. You can use it as an alternative to a screen recorder, as it allows you to save the recordings for later use. If you have a dual monitor setup, then you can use screen capture software to record each monitor and play the recorded videos whenever you need to.

Disable Antivirus Software

Antivirus software is a necessary thing for your PC, but it will slow down the performance of your system. If you don’t need antivirus software to protect your PC from viruses then disable it from your system.

Make Sure to Clean Your Drivers

Make sure that you have installed the right driver of your monitor. The driver is the software that helps to connect your monitor to the operating system. If you are having a dual monitor setup then you need to install the drivers of your second monitor separately.

Make Sure to Install a Full Graphics Driver

Your monitor requires a full graphics driver to work properly. If you are having a dual monitor setup then you need to install the driver of your second monitor separately.

Disable Power Management

Power management is the software that automatically turns off your computer when it is not being used. If you have a dual monitor setup then make sure to disable power management as it will improve the performance of your system.

Frequently Asked Questions

Can dual monitors cause lag?

Dual monitors can cause lag, especially if they’re set at the same resolution. Most computers come with one monitor set at 1920 x 1080 pixels, while the other is set at 1280 x 1024 pixels. This means that they’ll both be displaying at a resolution of around 30 fps (frames per second).
If both screens are set at the same resolution, then each screen will display 60 frames per second, which is much too low for smooth gaming or viewing content. This is why most people usually choose to use one monitor for content, and the other for a game.

Why is my PC slower with two monitors?

Most desktop PCs are designed to run with one display. They are configured to automatically detect the second display and then scale back the processing capabilities to match the single screen. However, if you have a dual monitor setup, then you will need to manually configure the settings to allow the second monitor to run in full resolution.

How can I improve my dual monitor performance?

The best way to improve your dual monitor performance is to use a graphics card that supports multiple monitors. There are several graphics cards available in the market that support multiple monitors, and you should choose the one that fits your budget.

Does 2 monitors use more GPU?

A monitor consumes more GPU when it has two screens compared to a single one. It’s the same concept as how two people using a single laptop consume more power than a person using two laptops. In both cases, you’ll see more processing power required to render the visuals.

Do 2 monitors decrease FPS?

No, 2 monitors do not decrease the frames per second. This is because a monitor is nothing more than a light source and not an actual display device.

Why do gamers have 2 monitors?

Gamers have 2 monitors because it’s easier to see everything on both screens simultaneously. With one monitor, you have to scroll up and down to view information. With two, you can pan across both screens to see everything.


We have discussed the most common causes and tips to fix dual monitor lag in Windows. So, if you are facing this problem then don’t panic because the solutions are very simple. First of all, you have to clean your graphics card and RAM. After that, you have to install the latest graphics card and RAM in your laptop.

If you are using Windows 7 then you can follow this guide to resolve the dual monitor lag issue.