Sims 4 altering computer volume settings when tabbing in

@BUNNYMON5TER  When you launch Sims 4, is the computer volume always at 50, or does it stick to whatever you've previously chosen either in general or in-game?

Before I launch sims my computer volume can be at whatever and then when I open the game it jumps to 50.

@BUNNYMON5TER  I wonder if a third-party app is interfering here.  As a basic test, you can shut down anything in the Task Manager that doesn't need to be running.

The more thorough approach is a clean boot:

https://support.microsoft.com/en-us/topic/how-to-perform-a-clean-boot-in-windows-da2f9573-6eec-00ad-2f8a-a97a1807f3dd

The one service to leave enabled is the EABackgroundService, which the EA App needs in order to run.  Disable the rest as described.

When you reboot your computer, go through the Task Manager's background processes list shutting down any service that doesn't absolutely need to be running, for example anything from MSI Afterburner to RGB software might still be enabled.  If you accidentally kill a critical process and it doesn't restart on its own, just reboot your computer again.

Don't open anything other than Sims 4 and the EA App while testing, not even a browser window.

If this helps, you can selectively reenable services until you find the problem, then decide what to do about it: leave the service disabled, uninstall the app, dive into its settings to try to find out what's overriding your preferences.