Hello All, I've just got the serious problem that recording stop with "sdcard too slow" message from SJ8 PRO when I recoding 4K(3840x2160) 60fps. I've got several sdcard speed test as the follow. and the SJ8PRO Firmware version is as the below. and my sdcard is as the below What am I supposed to do to resolve this problem? What thing should I have to more check? Please help me.