Mouse acceleration on Marvel Rivals is awful but makes it go from awful to disastrous for a player is that you don’t even know it exists. For reason, the gameplay designers decided, on your behalf, that you 100% need mouse acceleration in Marvel Rivals.
They went as far as not even listing it as an option in the gameplay settings and have on by default with no way to toggle off.
So, did you ever wonder why your aim is inconsistent, why your muscle memory isn’t adjusting properly even after so many games? You may think you’re just trash but that might not be the case; it is mouse acceleration.
Turn it off and you will see a clear difference it how well you can control your aim with raw input.
Turning Off Mouse Acceleration in Marvel Rivals
On your taskbar search in Windows you need to search for “Run” and open it when it shows up. Enter %localappdata% in Run and run the command.

You will be taken to the local app data folder where you need to scroll down to find the “Marvel” folder.

Now open the “Saved” folder.

Now open the “confiq” folder.

Open the “windows” folder.

And lastly, open the gameusersettings.ini file.

The file will open in the notepad. What you need to do is scroll all the way down to the text and paste the following script at the bottom.
[/Script/Engine.InputSettings]
bEnableMouseSmoothing=False
bViewAccelerationEnabled=False
It should look something like this:

Save the file (Save, not Save as) but we are not done yet. You need to right click on the gameusersettings.ini file and open its properties.


In properties, check “Read only” and apply to finish the process. Now your mouse acceleration in Marvel Rivals is turned off.