How many tracks?
At least prior to this latest code drop, I know for a fact that somewhere around 7K tracks in my MS with everything else I have going on will start to create more problems. That number varies for different people.
FWIW, I still believe, no matter what Tesla does, things we do that increase memory usage* MAY ultimatey cause wierd problems unless we ultimately find Tesla has finally implemented hard limits when certain customer-variables are being exceeded.
* See prior posts of mine, but net is, the size of the physical device does not matter, nor does the length of each track unless you go nuts with something like a full-audiobook or uncompressed album as one physical file, but at a bare minimum, the number of tracks, and the number of unique and length of those fields for every track on the device and used within the interface like ALBUM, GENRE, (track) ARTIST, Album Art, etc., as well as the directory naming and depth one elects to use on the USB device itself. All we do in terms of USB directory structure, file naming, and track tagging -- as well as our sync'd phone directory, recent calls, calendar, etc. and Nav history (which never had limits either) have to fit within the fixed 2GB memory our non-AP2 MS have, as well as whatever programming buffers and the like Tesla requires to make it all work. Too many tracks, and at some point we each contribute to our own problems because of Tesla's lack of hard limits in both their programming and owner documentation.