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 EVO 128G What am I supposed to do to resolve this problem? What thing should I have to more check? Please help me.