SFTP streaming not working from seedbox

Hi,

Can anyone help me with this?

I have tried 2 seedbox providers, both rendering the same results. When I add network location of my seedbox as FTP or HTTPS, it streams without a hitch (i have 120mbit/15mbit connection). However HTTPS does not show all the files, so I do not want to use it.
When I mount as SFTP, the Kodi on RPI3b is struggling to play anything, the movie stops for like 5 minutes, then plays 10 seconds, then stops again… I have tried changing all the cache options, and nothing is going on. When I connect SFTP via total commander, the speed is great. What could be holding up the transfer in Kodi?

Thanks for your info Smile