Here is a picture of what i am talking about.
I am at my wits end with that annoying thing, please somebody help me.
I have no idea why the moderator random deleted the working solution. There is a small tool called HideVolumeOSD which can hide the overlay:
To hide the volume OSD you can select the menu item “Hide Volume OSD”
or just click on the tray Icon.
With this item you can toggle between
visible and hidden volume OSD. If you exit the application, the volume
OSD is always restored to visible state.