Micro SD class 10 has a speed around 80MBps read and write about 10Mbps while our internal SD card has <10Mbps of reading and <2 MBps write. Has anyone tried to use class 10 micro sd card? Does the galaxy reader support micro sd class 10? Can the internal SD card be completely bypassedand boot from the SD card? Somehow I think that the speed of the internal card is guilty of slowness of the galaxy with a small amount of RAM.