I am seeing the same issue. I use an ftp client to publish sites but I do user RW to pubish to my test server in my home network. Ever since the introduction of openssl in RW (8.1.7?) it takes 20 seconds to make the connection via SFTP whereas before it was instant. Because it takes so long the “lightning fast” option doesn’t get a look in as the publish is complete by the time the next connection is open.
EDIT: From testing the non closing connections issue this may be related to the version of openssl at the server end.
I have the same problem but it takes very much longer than your video, a couple on minutes some times. My main site is much bigger than yours. Cyberduck is no problem. I’ve taken to publishing it locally to my hd and uploading via Cyberduck. Hardly ideal, but it works until it is sorted.
I made some further tests and experienced, that it works without problems from my office and is still slow at home. In both cases I use a Deutsche Telekom access, but with different routers.
In the office I use Telekom Digitalisierungsbox Standard, at home it’s a FritzBox 7590.
Strange, but this may give the specialists a hint where to look.
I have a FritzBox 6591 but I tried it using a 4G connection from my phone and disabled all other network access - still a long wait till the upload begins and then only one connection and after a few seconds the other connections start to appear…