I think there is an issue with large FTP backup archive downloads. We have seen it on two different backup spaces and two different Plesk 17.8 installations. A download starts with high speed at 300 MBit/s, and then at some point the download rate drops to a low speed of e.g. 5 MBit/s. When we do a manual download at the same time where the Plesk download from the backup space drops to 5 MBit/s, that manual FTP download runs with 300 MBit/s.
If anyone here has experience similar symptoms lately, please post.
If anyone here has experience similar symptoms lately, please post.