3. Use Another USB Port
If the above methods don’t work for you, try using a different USB port for your mouse and check whether the Call of Duty Modern Warfare Mouse Lag issue has been fixed or not. If your mouse supports USB 2.0 or 3.0 then you can connect it to the respective USB port to make it more reliable.
4. Change Modern Warfare Task Priority
It seems that the Call of Duty: Modern Warfare task is running in the background and Windows 10 doesn’t consider it as a necessary task. So, we’ll recommend you to check the same and change the task priority in order to ask the Windows 10 system to allot more system resources for your game.
- Make sure that the Call of Duty Modern Warfare game is already running in the background. [Just open the game and exit to the desktop without closing the game]
- Now, press Ctrl + Shift + Esc keys to open Task Manager.
- Go to the Details tab > Locate the Modern Warfare game task.
- Right-click on the task and hover over the Set priority option.
- Next, click on Normal or High according to your preference. [Normal is recommended]
- Once done, close the Task Manager window and go back to the Modern Warfare game to check for the issue.
5. Reduce Mouse DPI (Sensitivity)
If in case, you’re using a gaming mouse or multi-DPI mouse then you should try increasing or decreasing the mouse DPI (sensitivity) value in order to cross-check whether the Call of Duty Modern Warfare Mouse Lag issue has been fixed or not. Just open the mouse configuration software and try to set the value lower or higher in order to fix the issue.
However, if you’ve a basic mouse then you can use the Windows default Mouse settings option by following the steps below:
- Press Windows + I keys to open Windows Settings.
- Now, click on Devices > Select Mouse from the left pane.

- Here you can increase or decrease the mouse cursor speed according to your preference.
- Additionally, you can choose and select the scrolling speed or sensitivity for your external mouse.
Whereas if you don’t use an external mouse and having issues with the touchpad on your laptop then do the following steps:
- Press Windows + I keys to open Windows Settings.
- Now, click on Touchpad > Here you can select your preferred cursor speed, touchpad sensitivity, multiple actions of the touchpad clicks, scrolling, zooming, gestures, and more.
The chances are high enough that some of the installed third-party programs are conflicting with the system functions that can trigger the Call of Duty Modern Warfare Mouse Lag issue on Windows. So, it’s highly recommended to perform a clean boot in order to disable the third-party programs and performing the clean boot. To do this:
- Press Windows + R keys to open the Run dialog box.
- Now, type msconfig and hit Enter to open the System Configuration window.
- Go to the Services tab > Enable the Hide all Microsoft services checkbox.

- Check all the services from the list and click on Disable all.
- Click on Apply and then OK to save changes.
- Now, click on the Startup tab > Click on Open Task Manager.
- Under the Startup tab from the Task Manager interface, click on the particular tasks which are enabled for startup boot > Click on Disable.
- Make sure to select and disable one by one.
- Once done, restart your computer to apply changes.
That’s it, guys. We assume this guide was helpful to you. For further queries, you can comment below.