Thank you guys.
My new SD card is from SanDisk. It says UHS-II with 260MB/s on its cover.
I tried formatting it as FAT32 with no luck, just to see Loadiine GX2 say SD mount failed.
(However everything under vWii is working fine)
Finally the issue was solved by using Panasonic SD formatter...
I've been playing fallout4 all day, I went into a elevator and it kept going, never stopped, waited 5 minutes, must of been a bug. How bout you, whatcha do today?