I can plug in a USB stick at my dealer and play around, but some things remain unclear. Does anyone have a Mazda3 2017 and use a USB stick? What size (GB) does the USB stick have? Will the USB stick be re-readed after each start? It is also played by a 128GB stick, but that takes 5-10 minutes until what is played. Of course, this is useless. Can you deactivate the re-reading after each start? Collects the MZD data from the USB stick until all op. with another USB stick there were more options, ie it could be that options come in after some time? Looking forward to every info!