You don't notice it until you are out in the middle of nowhere, in the middle of the night, trying to enjoy the thundering silence of God's creation (the kind of nighttime experience we were designed to have) and then you notice it,
TICK, TICK, TICK...
The clock that came with your RV is amazingly loud!
So I made a muffler for mine.
Using a piece of open cell foam about 1 inch thick, I cut it so it would fit around the little quartz clockwork and not be visible by protruding beyond the oval shape of the clock face.
I found the clock wouldn't fit back into it's wall bracket with the foam in place, so I cut a slit from the outside edge to the middle of my foam, then hung the clock as normal, then packed my foam in around the clock movement.
Through my unscientific measurement (I listened to it) it seems to be a bit quieter now. (For no cost and 5 minutes of my time)