When playing music through bluetooth to another device (bt boombox, or car audio) every minute the music stutters. for 1~2 seconds. This happens with every app, including Rocket player, native MIUI music player and Google Music and is 100 percent reproducible every time. It only happens with screen off! Most likely it has something to do with switching to another powerstate. This happens in all MIUI 6.x.x versions.