Thanks for sharing this. Does the sound get louder in every game or only in specific ones?
Try this: right-click the speaker icon, choose “Sounds,” open the “Communications” tab, and select “Do nothing.” Then go to Settings > System > Sound > Volume mixer and check that each app’s volume is set evenly. Also, turn off “Spatial sound” if you don’t use it.
If the issue continues, update your audio driver through Device Manager or Windows Update as recommended.