How to Fix Modern Warfare 3 Shaders Optimization Slow or Getting Stuck

Sledgehammer Games and Activision have done a tremendous job with the Call of Duty: Modern Warfare III (2023) title that’s a revised edition with plenty of changes. The all-new COD MWIII 2023 is a multiplayer first-person shooter video game that delivers the ultimate battle experience of Captain Price and Task Force 141 because the war has changed. It’s currently causing multiple issues or bugs, and shader optimization issues are one of them. It seems Modern Warfare 3 Shaders Optimization is Slow or Getting Stuck unexpectedly.

Shader Optimization is an in-game program that runs on the graphics card to deliver better visual quality and improved frames per second (FPS). It also allows the game’s system to add special effects and artistic styles. Well, thousands of shader units generally compute all at a time on a GPU while launching the game or loading the game. But somehow shader optimization either doesn’t complete up to 100% or it becomes slow enough which can be an issue.

How to Fix Modern Warfare 3 Shaders Optimization Slow or Getting Stuck

How to Fix Modern Warfare 3 Shaders Optimization Slow or Getting Stuck

It looks like whenever Call of Duty Modern Warfare 3 (2023) players try to launch the game or get into the gameplay, the shaders optimization process always appears on the main screen, even if there is no pop-up message. The most frustrating thing is that the shaders optimization process gets slow or gets stuck which definitely causes game launching and gameplay issues with the visuals. Well, multiple reports claim that this is one kind of a bug and developers should address it.

Several players are getting affected by the shaders optimization stuck at a few percentages in between 0%-100% and the progression doesn’t go on. Some other players are saying that a shaders optimization pop-up appears on the main screen every time they restart Call of Duty Modern Warfare III 2023. A couple of players are getting an error notice that says “Restart Required” while getting into the main screen. It’s not a new issue for the Call of Duty players.

Fortunately, we’ve managed to provide you with a couple of potential workarounds that should come in handy. Make sure to follow all troubleshooting methods until the issue has been fixed. So, without further ado, let’s jump into it.

1. Your PC Specification isn’t Capable

First of all, you’ll have to check your PC specifications to ensure it’s meeting the system requirements properly to run the Call of Duty MWIII (2023) game. In case, your PC hardware or software is outdated then you might receive multiple issues with the game launching and shaders optimization. Here we’ve provided both the minimum and recommended requirements below for your ease. If your PC configuration is capable of running the game, you can skip this and follow the next workaround.

Minimum Requirements Recommended Requirements
OS: Windows 10 64 Bit (latest update) OS: Windows 10 64 Bit (latest update) or Windows 11 64 Bit (latest update)
Processor: Intel Core i5-6600 or AMD Ryzen 5 1400 Processor: Intel Core i7-6700K or AMD Ryzen 5 1600X
Memory: 8 GB RAM Memory: 16 GB RAM
Graphics: NVIDIA GeForce GTX 960 / GTX 1650 or AMD Radeon RX 470 Graphics: NVIDIA GeForce GTX 1080Ti / RTX 3060 or AMD Radeon RX 6600XT
DirectX: Version 12 DirectX: Version 12
Network: Broadband Internet connection Network: Broadband Internet connection
Additional Notes: SSD with 149 GB available space Additional Notes: SSD with 149 GB available space

2. Try to Restart Shaders Optimization

Sometimes issues with the shader optimization in video games can be crucial enough to prevent players from enjoying their gameplay. Shaders Optimization is nothing but a program that runs in the background to improve the graphical stability and real-life-like visual quality up to some extent. So, you can try restarting shaders optimization by following the steps below.

  • Launch Call of Duty Modern Warfare 3.
  • Navigate to in-game Settings > Click on the Display tab.
  • Click on Restart Shaders Optimization.
  • Now, wait for the process to be completed.

3. Check for Activision Online Services

You should also check for Activision Online Services here to ensure there is no issue with the server downtime or outage. Sometimes game server issues might trigger multiple conflicts at the players’ end. It’s recommended to visit the official link above and select Call of Duty: Modern Warfare III from the list to check for the latest info. If there is an issue with the online services then wait for a couple of hours and try again.

4. Restart Your Networking Device

It’s highly recommended to restart your networking device to easily fix networking glitches up to some extent. Make sure to power off the Wi-Fi router and unplug the power adapter from the source. Then wait for a couple of seconds and then plug back the power cable in. Turn on the router and check for the issue again.

5. Force Close Modern Warfare 3 and Relaunch It

You can try force-closing the COD Modern Warfare 3 task from the system and then relaunch the game to check for the issue. Sometimes background running tasks can be crucial enough behind the shaders optimization issue on Call of Duty titles.

  • Exit the Call of Duty: Modern Warfare 3 game.
  • Press the Ctrl+Shift+Esc keys to open Task Manager.
  • Go to Processes > Click on the Modern Warfare task to select it.
  • Click on End Task and then reboot the PC.
  • Then relaunch the Call of Duty Modern Warfare III (2023) game.

6. Update the Graphics Driver

Sometimes issues with the graphics card driver such as an outdated driver or corrupted driver on the system can eventually trigger multiple conflicts while playing video games. It’s suggested to check for the graphics driver and install the latest driver version.

Recommended Update:

  • Press the Win+X keys > Click on Device Manager from the list.
  • Double-click on Display Adapters.
  • Right-click on the dedicated graphics card that you use.

  • Select Update Driver > Click on Search automatically for drivers.
  • If there is an update available, it’ll automatically download & install the latest version.
  • Once done, restart the computer to apply changes.

Manual Update:

If you can’t find any pending updates, head over to the official website of the respective graphics card brand below and search manually for the latest update. Do remember that you’ll always have to search for the latest driver version and specific for the model you’re using. If a new version is available for the graphics card, download the driver and install it on your PC. You can jump to the link below to do so:

7. Check for COD: MWIII Updates

In some cases, an outdated game patch version can also trouble you a lot with the game launching & shaders optimization issues. Updating the game to the latest version will help in reducing bugs and stability issues most of the time. To easily update the game, check the following steps:

  • Open the client.
  • Go to Game Library > Select Modern Warfare III.
  • Click on the cog wheel icon next to the game.
  • Next, click on Check for Updates.
  • If an update is available, download and install it.


  • Open the Steam client > Go to Game Library.
  • Right-click on Modern Warfare III > Select Properties.
  • Click on Updates > Navigate to the Automatic Updates tab.
  • Select Only update this game when I launch it.
  • It’ll automatically install updates whenever available.

8. Verify and Repair the Game Files

Sometimes corrupted or missing game files on the PC might also trouble you while starting the game. It’s always better to verify and repair the game files by following the steps below on your PC to avoid errors.

  • Open > Click on Modern Warfare III.
  • Select the Cog Wheel icon next to the Play button.
  • Now, select Scan and Repair > Wait for the repair to complete.


  • Open the Steam client > Go to Library.
  • Right-click on Modern Warfare III in your library.
  • Go to Settings and select Properties.
  • Click on Local Files > Select Verify integrity of game files.
  • Wait for the process to complete.

9. Clear Steam AppCache

It’s highly suggested to clear the Steam AppCache data on the Windows PC by following the steps below to ensure there is no issue with the Steam folder or installed game files. Sometimes any kind of temporary glitch with Steam can also trouble you a lot.

  • Open File Explorer by pressing the Win+E keys.
  • Head over to the C:\Program Files (x86)\Steam path to open the Steam folder.
  • Right-click on the appcache folder > Copy the folder.
  • Go to the desktop screen and paste the copied folder on the desktop as a backup.
  • Now, go back to the Steam directory > Right-click on the appcache folder.
  • Select Delete and restart your PC.

10. Reinstall Call of Duty: Modern Warfare III

Last but not least, you’ll need to uninstall and reinstall the Call of Duty Modern Warfare 3 (2023) game on your respective device. Sometimes issues with the game installation directory or files might trouble you. Though reinstalling the game isn’t always recommended, there is nothing else to do at your end.

For Steam:

  • Open the Steam client on your PC.
  • Go to Library > Right-click on COD MWIII.
  • Select Uninstall > Click on Delete to confirm.
  • Wait for the uninstallation process to complete.
  • Exit the Steam client > Open File Explorer.
  • Copy & paste C:\Program Files (x86)\Steam\steamapps\common on the address bar.
  • Press Enter to search for the location.
  • Go to the COD MW3 folder > Delete the folder completely.
  • Reboot the PC to apply changes.
  • Finally, open Steam > Reinstall the COD MWIII game again.


  • Open the client.
  • Select Call of Duty: Modern Warfare III from the left panel.
  • Choose the Options menu on the left side.
  • Click on Uninstall Game > If prompted, confirm the uninstallation process.
  • Once done, close the launcher, and reboot the PC.
  • Next, open the launcher again > Start installing COD: MW3.
  • Click on the Options menu > Select Modify Install.
  • Select the mode that you want to install and select Confirm.
  • Hit Start Install and wait for it to complete.
  • Finally, launch the game to check for the shaders optimization issue.

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

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