Slow remote directory retrieval.

Since updating to 5.21.7 I have had very slow responses from my FTP server, especially it seems when retrieving a directory. I have not intentionally changed any settings. Any clues to what may be happening? I am not seeing a lot of angst about this version on this forum.
Thanks
Jim

What is the latest version that did not have the problem?
You can download all past versions of WinSCP from:
https://sourceforge.net/projects/winscp/files/WinSCP/
Please post logs from the last version that does not have the problem and the first version that does.

Thank you for responding. I think now that the new version is not the problem. I was able to re-install 5.15.9 and the problem still is happening. So it must be a coincidence that the problem arose around the time of the update. I did not have logging turned on but I will turn it on and see if there are any clues.
Jim