Sprout 1 - problem with streaming and pc connection and maintenance

first of all really like the design and sound.
i have 2 problems:

  1. when streaming from my android device (xiaomi redmi note 7 , Tidal) using BT it happens once in a while that it freezes for a second and then continues, why is that?
  2. when connecting to pc it does problems most of the time (using usb of course) and using the supplied driver from PSAudio ,

about the maintenance , the front looks like a wood material, is it really wood? because i was thinking about polishing it to prolong life