Fix: COD Modern Warfare 2 Stuttering or Freezing constantly

You’re one of the victims to experience lags, framerate drops, stutters, and other performance-related issues with the new COD Modern Warfare II. Well, if that’s true then you’re not alone because there are plenty of PC players facing the same issue these days. As per multiple reports, the COD Modern Warfare 2 game is Stuttering or Freezing constantly on the PC while getting into the gameplay sessions, no matter which specs you’re using.

Players have the ‘Verify Phone Number’ error and the ‘0x00001338 (0) N Error Code’ on the PC, which prevents them from getting into the gameplay, unfortunately. If you’re one of the affected players by the freezing or stuttering issue, then you can follow this troubleshooting guide to fix it. This specific issue may happen for several reasons and may vary depending on the PC specifications or in-game GPU settings.Fix: COD Modern Warfare 2 Stuttering or Freezing constantly

Fix: COD Modern Warfare 2 Stuttering or Freezing constantly

So, talking about the possible reasons, it may occur due to fullscreen optimizations, issues with the installed game files, outdated graphics drivers, outdated game version, outdated system software, background running tasks, issues with the overlay applications, lower RAM, in-game graphics settings, etc. Additionally, compatibility issues with the PC specifications, overclocked GPU, not running the game file with administrator access, etc may trouble you.

Luckily, here we’ve shared a couple of possible workarounds for you that should gonna help a lot. It’s highly recommended to follow all the methods one by one until the problem gets fixed for you. So, without wasting any more time, let’s jump into it.

1. Check System Requirements

You should check for the system requirements of the COD Modern Warfare 2 game to ensure there is no issue with the compatibility of the game and PC specifications. If in case, you find that your PC build isn’t meeting all the system requirements then make sure to upgrade the specific hardware/software to make it compatible. Otherwise, you can skip to the next method.

Minimum System Requirements:

  • OS: Windows 10
  • Processor: Intel Core i5-3570 or AMD Ryzen 5 1600X
  • Memory: 8 GB RAM
  • Graphics: NVIDIA GeForce GTX 960 or AMD Radeon RX 470

Recommended System Requirements:

  • OS: Windows 10/11
  • Processor: Intel Core i7-4770K or AMD Ryzen 7 1800X
  • Memory: 16 GB RAM
  • Graphics: NVIDIA GeForce GTX 1060 or AMD Radeon RX 580

2. Run MW2 as an Administrator

First of all, you should run the game exe application file on your PC as an administrator to grant the user account control access. It’ll allow the system to run the program file properly which can prevent the crashing or not launching issues. You can follow the steps below to do so:

  • Right-click on the COD: Modern Warfare 2 exe file on your PC.
  • Select Properties > Click on the Compatibility tab.

  • Make sure to click on the Run this program as an administrator checkbox to checkmark it.
  • Click on Apply and select OK to save changes.
  • Now, run the game to launch it.

Please Note: If in case, you’re one of the client or Steam client users to run the Call of Duty: MW2 game then make sure to follow the same steps for the specific game launcher too.

3. Update GPU Drivers

It’s highly recommended to check for the graphics driver update on the PC by following the steps below. By doing so, you’ll be able to install the latest update which will fix several graphical issues with the program. To do so:

  • Right-click on the Start Menu to open up the Quick Access Menu.
  • Click on Device Manager from the list to open it.
  • Double-click on Display adapters to expand it.

Device Manager Update Display Adapter

  • Right-click on the dedicated graphics card that you’re using.
  • Click on Update driver > Choose Search automatically for drivers.
  • The system will automatically check for the available update.
  • If an update is available, it’ll automatically download and install the latest version.
  • Once done, ensure to restart your PC to apply the changes.

If there is no update available on the PC then make sure to visit the official manufacturer website of the graphics card and manually grab the latest version. Search for the particular graphics card model by the following links.

4. Update Call of Duty: Modern Warfare 2

It’s highly suggested to check for the game updates on your PC by following the steps below to ensure there is no outdated game version present. Sometimes issues with the outdated game patch version might cause several conflicts at your end that can affect the game launching or gameplay experience badly. To do that:


  • Open the (Blizzard) launcher > Click on the Blizzard logo from the top left corner.
  • Go to Settings > Click on Game Install/Update.
  • Scroll down to the bottom of the page > Click on Apply latest updates and download future patch data for recently played games to enable it.
  • Now, click on Done to save changes > Restart the launcher to apply changes.
  • It should automatically update the game to the available version.

For Steam:

  • Open Steam and go to Library.
  • Click on COD: Modern Warfare 2 from the left pane.
  • Steam will automatically search for the available update.
  • If there is an update available, click on Update.
  • Make sure to wait for some time until the update completes.
  • Once done, ensure to reboot the PC to apply changes.

5. Try Lowering In-Game Graphics Settings

In most scenarios, the chances are high that your in-game graphics settings are causing such an issue. Depending on your PC configuration and display device, it’s suggested to set up valid graphics settings so that the game can run smoothly. If your PC isn’t powerful and you’ve set graphics settings to a higher level then you may encounter lags or stutters a lot. So, open the game settings menu and reduce the graphics options as per the PC’s capacity.

6. Disable Fullscreen Optimizations

Well, the Full-screen optimization and DPI settings can be found on Windows programs by default. Sometimes these options may trigger issues with the game performance. You should manually try disabling the fullscreen optimizations by following the steps below.

  • Go to the COD Modern Warfare 2 game directory.
  • Now, right-click on the ModernWarfareII.exe application file.
  • Select Properties > Click on the Compatibility tab.
  • Click on the Disable Full-Screen Optimizations checkbox to enable it.
  • Next, click on the Change high DPI settings button > Select the Override high DPI scaling behavior checkbox.
  • Select Application from the drop-down menu > Click on Apply and then OK to save changes.
  • Once it’s done, you can try checking COD Modern Warfare 2 Stuttering, Lags, or Freezing constantly issue again.

7. Turn On Nvidia DLSS

If your COD Modern Warfare 2 game is stuttering or freezing a lot and you’re using the Nvidia graphics card then make sure to enable the Nvidia DLSS feature to reduce the in-game stutter issue up to some extent. Sometimes the game may not run smoothly on the FidelityFX CAS option which comes enabled by default. So, just disable FidelityFX CAS and then turn on DLSS. You can set DLSS to Quality to see visual improvements and fewer FPS drops.

8. Disable NVIDIA ShadowPlay

You should try turning off the Nvidia ShadowPlay feature on the Nvidia GeForce Experience app to ensure there is no issue with the game loading or gameplay experience. Nvidia ShadowPlay allows you to record and share high-quality video games, take screenshots, and perform live streams with your friends just like an overlay app. So, it may cause game performance issues in some scenarios unexpectedly. If you’re an AMD GPU user, skip this one.

  • Open the Nvidia GeForce Experience app.
  • Click on Settings > Click on the General tab.
  • Go to the Share option and disable it.
  • Ensure to save changes and reboot the PC.

9. Set CPU Affinity via Task Manager

You can try setting up the CPU Affinity via Task Manager if your processor runs a 6-12 core architecture. Set the CPU Affinity by following the steps below accordingly to reduce frame drops or stutters in the game.

  • Press the Ctrl+Shift+Esc keys to open Task Manager.
  • Now, click on the Details tab > Right-click on the COD MW2 process (cod.exe).
  • Click on Set Affinity > Manually tickmark the CPU cores to use as CPU 0, 1, 2, 3.
  • Then, uncheck the rest of the processors > Click on OK to save changes.
  • You should also reboot the PC to apply changes.

10. Verify and Repair Game Files

If in case, missing or corrupted game files on the PC may trouble players a lot. You can follow the steps below to verify and repair game files on the computer so that the game can run properly.


  • Open the client on your PC.
  • Click on the Call of Duty: Modern Warfare II game.
  • Now, click on OPTIONS (Gear icon) > Click on Scan and Repair.
  • Choose Begin Scan and wait for the process to complete.
  • Once done, close the launcher, and restart your PC.

For Steam:

  • Launch the Steam client > Click on Library.
  • Right-click on COD: Modern Warfare 2 from the list.
  • Click on Properties > Go to Local Files.
  • Click on Verify Integrity of Game Files.
  • This process may take some time to get completed. So, have some patience.
  • Once done, make sure to reboot the PC to apply changes.

11. Update Windows

Updating Windows OS build is always essential for PC users as well as PC gamers to reduce system glitches, compatibility issues, and crashes. Meanwhile, the latest version mostly includes additional features, improvements, security patches, and more. To do that:

  • Press the Win+I keys to open Windows Settings.
  • Click on Update & Security > Select Check for updates under the Windows Update section.
  • If there is an update available, select Download and Install.
  • It may take a while to complete the update.
  • Once done, restart your computer to install the update.

12. Close Background Tasks

Unnecessary background running tasks or programs can eat up a lot of system resources like CPU or Memory usage that, reduces system performance. Hence, the startup crashing, lagging, and not loading issues appear quite often. Simply, close all the unnecessary background running tasks completely. To do this:

  • Press the Ctrl+Shift+Esc keys to open Task Manager.
  • Now, click on the Processes tab.
  • Click to select the task individually that you want to close. [Running in the background and consuming enough system resources]
  • Click on End Task to close it one by one.
  • Once done, restart your system.

13. Perform a Clean Boot

Some of the programs or services may run in the background whenever you boot up the Windows system without your intent. Those apps or services will going to use a lot of internet connection as well as system resources. If you’re also feeling the same, make sure to perform a clean boot on your computer to check for the issue. To do that:

  • Press the Win+R keys to open the Run dialog box.
  • Now, type msconfig and hit Enter to open System Configuration.
  • Go to the Services tab > Enable the Hide all Microsoft services checkbox.
  • Click on Disable all > Click on Apply and then OK to save changes.
  • Now, go to the Startup tab > Click on Open Task Manager.
  • The Task Manager interface will open. Here go to the Startup tab.
  • Then click on the particular task which has a higher startup impact.
  • Once selected, click on Disable to turn them off from the startup process.
  • Do the same steps for each program that has a higher startup impact.
  • Once done, make sure to restart your computer to apply changes.

14. Disable Steam Overlay

If in case, you’ve enabled the Steam Overlay app on your PC but you’re not using it that much then we’ll recommend you disable it right now. The Steam Overlay option may come in handy in streaming, recording, or taking screenshots. But not everyone finds it useful always. So, turning it off should reduce the extra load from your system to improve performance.

  • Open the Steam client > Go to Library.
  • Right-click on COD Modern Warfare 2 > Click on Properties.
  • Make sure to click on Enable Steam Overlay while in-game under the GENERAL tab to uncheck it.
  • Once it’s disabled, re-launch the game to see if it performs better or not.

15. Increase Virtual Memory

Make sure to manually increase the virtual memory on the PC by following the steps below to confirm whether the virtual RAM works well with the game.

  • Open Control Panel from the Windows Start menu > Go to System.
  • Click on Advanced system settings > Go to the Advanced tab.
  • Open Settings under Performance > Click on the Advanced tab.
  • Click on Change under Virtual memory.
  • Now, click on Disable next to the Automatically manage paging file size for all drivers option.
  • Then you’ll need to select a Custom size > Type in a higher value of your actual RAM size in both Initial size and Maximum size. [For example, if you’ve 8GB RAM then input 12000 MB]

Note: Kindly enter the RAM value in MB size. 1GB means 1024MB in storage. So, do accordingly, and use C: drive where Windows is installed.

  • Click on Ok and restart your computer > Once done, make sure to reboot the PC to apply changes.

16. Keep the PC in Well Ventilated Area

You can keep your PC in a well-ventilated place where the PC can get enough air circulation to dissipate heat faster. If in case, you’re using a PC mostly inside an air-conditioned room then you don’t need to worry about overheating. Make sure to power off your computer once a day whenever you complete your work or gameplay. Just power it off to give some rest if the weather condition is too hot or you’re using the PC for a long time.

It’s also highly recommended to not place your computer near a window or any open area where the outside is heat or under direct sunlight. Make sure to use a good quality thermal paste on your CPU to maximize cooling. If in case, you’re using a gaming rig and the overheating issue appears most of the time with other games or heavy programs too then you should use water cooling which is costly but worth the value.

17. Reset BIOS Settings to Default

Another thing you should do is simply reset the BIOS settings to the optimized default one by following the user manual guide of your specific laptop model or desktop configuration. It’s recommended to only proceed with this method if you’re aware of the consequences (if something goes wrong). Make sure to note down the boot drive settings or information before jumping into it. Turn on TPM (if disabled).

Some laptop brands do automatically push BIOS updates periodically via their own update software or support application. For example, Lenovo laptop users may get BIOS updates via the Lenovo Vintage application and device driver-related official updates whenever available from the company. Once the BIOS is updated to the latest version, you should check if COD Modern Warfare 2 Stuttering, Lags, or Freezing issue has been fixed or not.

18. Try Upgrading Physical RAM

It’s quite unfortunate that the above methods didn’t work for you and your physical RAM isn’t sufficient enough to run video games properly. In that scenario, make sure to upgrade the physical RAM to double if your PC support RAM expansion. As most laptops or desktops do support up to 8GB/16GB of RAM expansion, you should upgrade it. Make sure to buy the same generation of compatible RAM stick to avoid the hassle.

Obviously, it may take some extra money from your pocket but this one-time upgrade of RAM will last many years without any issue. However, there is a catch. If your PC has only one channel for RAM then you’ll need to replace your older RAM stick with a new one. But if your PC has dual-channel for RAM then you can use both new and old ones like 4+4 or 8+8 depending on how much RAM storage you want to use.

That’s it, guys. We assume this guide was helpful to you. For further queries, you can comment below.

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