[momoninja]

I had an old 4GB micro sd laying around. Class 4. Probably can't even buy anything this slow any longer.

My experience was pretty horrible. DB creation took a long time (probably at least 5 mins) but more interestingly the UI was laggy to the point it affected my experience. My suspicion is that DB access never really stopped in the background, but I'm not sure.

Either way, just a heads up that there *does* seem to be a lower limit.

I am using a 512GB Sandisk MicroSDXC Extreme PRO R200/W140. That one is really fast. But for 300GB music it takes about an hour to index the database. When the database indexes music stutters during play. So I turned of automatically updating the database. I only reindex the database, when I add music.