I am afraid it's either the USB port on the car is slow / the screen system got issue, I play movie with DVD no issue, but my music play back with my Kingston 8GB 3.0 Thumb drive always lag when I browsing the folder / shuffle music in my Alza Advance, worst some time I unable to answer voice call on bluetooth as the screen freezed, some time the screen freezed even without switching it on as the Time on screen frozen, the GPS also will freeze the screen from time to time and I had to do a hard reset.

And by the way, I though maybe the micro SD provided by Perodua was slow, so i copy and paste my GPS to my new 32GB Class 10 micro SD, the problem still exist.

Conclusion, the vendor which Perodua use to Design the screen interface and system really sucks or Perodua give low budget to them due to cost cutting.