How to Turn off Mouse Acceleration - Marvel Rivals Guide

Step 1: Tap the Windows Key on your keyboard and type in run. Open it.

Step 2: Type in %AppData%

Step 3: Navigate back a folder by clicking on AppData.

Step 4: Click on the Local folder.

Step 5: Scroll down and click on the Marvel folder.

Step 6: Click on the Saved folder.

Step 7: Click on the Config folder.

Step 8: Click on the Windows folder.

Step 9: Right click the GameUserSettings.ini file and click on Edit.

Step 10: Scroll to the bottom of the config file and copy and paste the following text:

[/Script/Engine.InputSettings]
bEnableMouseSmoothing=False
bViewAccelerationEnabled=False

Step 11: Save the config file and close the Notepad window.

Step 12: Right click the GameUserSettings.ini file again and click on Properties.

Step 13: Turn on the "Read-only" attribute at the bottom of the popup. 

Step 14: Now click on Apply in the bottom right side and click OK.

Step 15: That's it! You are done and ready to play the game! The reason why you make it read-only is so Marvel Rivals dev's don't undo what you just did! :)