i'm not sure if it started with 4.1.1 upgrade or maybe before .
when i write to sd card it takes very long to write the file .
if i write to other ssd or normal hd it writes fast as before .
only to sd card the speed became very slow .
i formatted the card to ntfs and then its very fast again , but my printer wont read ntfs .
something wrong with fat32 writing i guess?
it was working perfectly before . dont know exactly when it started .