Aurender N100h owners

My N100H does the same thing too...

Same here.  Probably not enough processor power for them to run smoothly.

reply from Aurender support: 

VU meter is mainly cosmetic.
We do have a plan to make it smooth, but we don’t have exact schedule.

OK, in other words:  never!  :)

I have the N100H. What possible function do the VU meters have anyway? It is as silly as McIntosh sticking a VU meters on their turntable
http://www.mcintoshlabs.com/us/Products/pages/ProductDetails.aspx?CatId=turntables&ProductId=MT1...
If McIntosh came out with a toilet equipped with an integrated sound system (which I suspect is right around the corner-the toilet seat will glow in blue translucense) I bet it would have a VU meter attached somewhere. Maybe to measure output! But back to the Aurender, there is no conceivable reason for a music storage device/streamer to have output meters. The screen is primarily there for displaying the artist and title and the clever engineers got carried away a bit with functionality. 

As a happy owner of an Aurender N100h, I fully agree with @fsonicsmith.

Well, his McIntosh rant is quite another thing altogether...... :)