First timer here (go easy on me)!
Just had an AVIC-8200NEX installed in my car, and reading music from my USB stick is almost completely useless as it takes so long to read USB sticks, and every time I power the unit OFF / ON, it reads the darn USB stick again!
I have some Grace Mondo radios - they take a while to read a 64GB Sandisk Ultra Fit USB 3.0 Flash Drive, but after reading the stick the first time, it does not do so again unless you remove the stick.
Even then, I'm not so sure that it has to read the entire stick if you make changes and plug it back in.
Called Pioneer - t