Fallout is a well-known title in the gaming world, and maybe that’s why it has four installments now in the series. Fallout 4 is set in the post-apocalyptic world. The game’s location is set to a place called Commonwealth, which is inspired by the well-known cities Boston and Massachusetts. In the game, you play the role of a survivor who has been searching for his family, and the game is like an action-adventure journey. With a great storyline and graphics, the game is surely fantastic. The game was released for the Xbox One, PS4, and PC. Our today’s article is specifically for PC users. There have been a lot of complaints regarding the low FPS issues with the game. If you are also facing the fallout 4 low fps issues, follow this guide.

Guide To Fix Fallout 4 Low FPS Issue

Causes of Fallout 4 Low FPS Issue

Talking of the causes of the fallout 4 low fps indoors issue, well, some known reasons trigger the issue. According to the users, if Vsync is turned on, you might face the issue. Vsync is designed to run games around 30fps. If any game supports high fps well, it creates issues. Furthermore, there is a graphics setting for God rays, and it is being said that if they are set to high, users experience lag and low FPS. Also, a fair number of users have confirmed that the issue also occurs because of controller vibration.

Similar Types of Fallout 4 Low FPS Issue

  • On high end pc
  • fallout 4 fps fix
  • fallout 4 fps cap
  • Fix mod
  • Suddenly low fps
  • fallout 4 vsync
  • 1080ti
  • City fps fix

How to Fix Fallout 4 Low FPS Problem Issue

Fixing the Fallout 4 Low FPS in city Issue is not that hard. Below we have demonstrated all the solutions and tips that will surely fix the issue.

1. Tweak the Fallout4Prefs.ini File

As mentioned in the causes section, there have been many users who have confirmed that if Vsync is turned, the issues are most likely to occur. Vsync is made to work with the game supporting 30FPS, and if your support high FPS well, you need to turn the Vsync off. You just need to make changes in the games ini file and follow Fallout 4 Low FPS fix steps below.

  • STEP 1. Close the game completely, end its process from Task Manager
  • STEP 2. Now head to the below path
documents/my games/fallout4


  • STEP 3. Here you will find the Fallout4Prefs.ini file, right-click on it and open with Notepad
  • STEP 4. Locate the iPresentInterval=1 line and replace 1 with 0


  • STEP 5. In case it is not available, simply add the line and make sure to put the value 0
  • STEP 6. Once one save the changes and try running the game

2. Lower Down the God Rays

Another reason you face the Fallout 4 Low FPS in cities issue s because of the high value of God’s rays. For some reason, of the God rays have been set too high, it lowers the FPS. To fix it, you simply have to add a command. Follow the below steps for easier understanding.

  • STEP 1. Close the game completely, end its process from Task Manager
  • STEP 2. Now head to the below path
documents/my games/fallout4
  • STEP 3. Here you will find the Fallout4Custom.ini file, right-click on it and open with Notepad
  • STEP 4. Now simply add the below command and then save the file
sStartingConsoleCommand=gr off

fallout 4 low fps

3. Turn OFF the Vibration

If the above two Fallout 4 Low FPS gtx 970 methods fail to work, well, there are good chances that the culprit is the vibrations. Users have confirmed that for some reason, if the vibration is turned on for the game as well as the controller, then it lowers down the FPS of the game. However, on turning the FPS off, there is a drastic change in the FPS. Follow the steps to turn off the vibrations.

  • STEP 1. While the game is running, pause the game and head to the Settings
  • STEP 2. Here locate the settings for Vibration. Once you find it simply turn it OFF


  • STEP 3. Also, there must be a setting for the controller vibration as well. Make sure to turn it OFF as well. 
  • STEP 4. Once done, return to your game and enjoy lag-free gaming

In the above guide, we have provided detailed steps for getting rid of Fallout 4 Low FPS. We have gone through the possible causes of the issue as well.

We hope by following this guide, your Fallout 4 Low FPS issue has been fixed. For more guides like this, follow us. Thank you!


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