I vote for this feature, just move form FileZilla, All WinSCP features are better than FileZilla except parallel transfers!
This is still an issue!!!
I'm sure this would definitely have something to do with it. Even with a couple of 'cons' of using WinSCP, I still prefer it over FileZilla. Not only does it feel more friendly to use but being able to edit files 'on the fly' with the built in editor is, IMO, a must have. I find it cumbersome to have to use an external editor and then save, go back to the FTP client and approve the upload of the modified file.We migrated all our team from FileZilla to WinSCP (for security reason), but some member said that WinSCP is slower and I found this topic.
Not sure if they idea would help you, but you would ZIP up the contents, upload it as a .zip file and then extract it on the destination via a PHP script. It's much faster that way, regardless of the FTP client because transferring 1,000 files vs 2 files will always take longer, even when they are the same size.I think this feature is a must have, especially for long distance connection (in our case Lost Angeles to Paris).
Because with many connection at same time you don't see the latency and to upload a website (CMS type) it's necessary.