well you are encrypting the data… maybe it’s not the connection… but some sort of processing latency or other bottleneck which then causes the connection to time out or whatever…
or your internet isn’t as stable as you think it is…would be very interesting to figure out why…
the tardigrade connections may not be as overbearing as older software, so many just a short break in the connection could stall it… not easy to say… but i could imagine many such weird cases that would affect stuff like it.
even optimizing your TCP setting’s for gaming might make connections unstable for file transfers. on some connections…
on time i had a bad switch port or switch / repeater or whatever at the ISP… that was a fun one to track down… think i had a hold of them 5 times a row before they finally found the problem.