Thanks both. It did help to process queue in the way above, but there was still some trouble. I figured out a solution. I had to make sure Active mode and binary mode is set in settings and in the website settings. I also had to make sure Filezilla was allowed through my firewall.
Somewhere online suggested to initially download to a location with a short path, so to a shortly named foler in C drive. that helped, then I copied and pasted into my destination.
I was getting some timeouts, so I also had to set it to 0 to disable them. I still encountered some server timeouts, so I stayed active in the window clicking about until it was done. I’d like to see if there is a way I can set and forget, but it wanted me to be present while transferring, annoyingly!
Finally when I had trouble on a bigger folder, I downloaded in parts instead and that seemed to help too.