sFTP vs FTP speeds

Mmhhh , I just formated a USB 3.0 prendrive to exFAT:

I get 8.4 MB/s pushing data and 11.3 MB/s getting stuff from the Vero.
With ext4 filesystem on the stick I get full speed in both directions, as Sam predicted.

Can you SSH into the Vero and

  1. modify in /etc/vsftpd.conf line xferlog_enable=YES
  2. sudo systemctl restart vsftpd
  3. do a file transfer again
  4. upload the log using sudo paste-log /var/log/vsftpd.log and provide the return URL here
  5. upload mount information by sudo findmnt -A|paste-log and provide the URL here

Thx