Need input on TYT MD390 w GPS

I have recently received my TYT MD 390 w the GPS. I have noticed that on occasion, the radio will shut off and come right back on by itself.

The volume screen is a bit sluggish with respect to the volume bar, when I turn the knob.

I do not hear much (if any) traffic on my local DMR repeater. Goldsboro, NC PRN, or anything for that matter.

Is there something that needs updating or what if anything have I done wrong.

Thanks for any help.