Hello, on my SECO A62-J 2GB board, I find the operating system very slow on Android 6.0.1. I installed Phone Doctor Plus application, it found the harddisk speed very slow : only 3 MB/s I am running Android on a Class10 16GB microSD card. Normally Class10 is about 20 to 40MB/s also writing no? Is there a problem with Android 6.0.1 microSD drivers ? Do I need to change the micro SD card type ? if yes, to which one ? I wanted to try to install my Android on the EMMC On board Flash Memory but I can not do it : no Ubuntu image boots on this board. Can you advice what to do to improve this Operating System Reactivity ?