It's because the memory needed to have fstrim run on it regularly. In Android 4.3, this now happens daily. If you're running a device with an earlier version

It's because the memory needed to have fstrim run on it regularly. In Android 4.3, this now happens daily. If you're running a device with an earlier version of Android, you can use LagFix (requires root): https://play.google.com/store/apps/details?id=com.grilledmonkey.lagfix&hl=en https://play.google.com/store/apps/details?id=com.grilledmon...