Using dual monitors can effectively improve work efficiency or enhance your gaming experience.
However, some users are troubled by the second monitor lagging problem, especially when playing games.
This post onMiniToolfocuses on this topic and provides several feasible solutions to address the issue.
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If you are also troubled by this problem, you could keep reading to get useful fixes.
Is your Lenovo laptop not detecting external monitor?
Apply the workarounds listed in this guide to resolve it effectively.

Fix 2.
Change the Refresh Rate
Computer lag can also be related to the monitors refresh rate.
Press theWindows + Ikey combination to open prefs.
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ClickSystem>Display>Advanced display tweaks.
Next, clickDisplay adapter properties for Display 1.
In the new window, move on to theMonitortab, and set up the screen refresh rate to60 Hertz.

Duplicate the steps to change the refresh rate of the other monitor.
After that, kickstart your gear and look to see if the issue has been resolved.
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Windows controls are reset after reboot?

you’re free to find several useful solutions from this comprehensive tutorial.
Fix 3. it’s possible for you to accomplish this task from gadget Manager.
Right-click theWindows logobutton to selectDevice Manager.
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Expand theDisplay adaptersoption, then right-smack the display rig to selectUpdate driver.
Duplicate these steps to update the monitor driver underMonitors.
Here we take Google Chrome for example to show you how to do that.

In Google Chrome, click thethree-doticon in the upper right corner and selectSettings.
In the search box, typehardware,and then the option of Use hardware acceleration when available should appear.
Next, switch the button next to it toOff.
Relaunch Chrome and then peek if the monitor lag issue has been addressed.
Fix 5. initiate the Hardware and Devices Troubleshooter
Step 1.
In the Windows search box, typecmdand clickCommand Promptfrom the best match result.
In the command line window, typemsdt.exe -id DeviceDiagnosticand pressEnter.
After that, click theNextbutton in the Hardware and Devices window, as depicted below.
The tool will start to detect and fix related problems automatically.
you could attempt the approaches above to address it.