> Gigabit and USB3 speeds. Much better.
+
> Can probably copy around 19GB in that period.

Huh? 19GB in 8 hours doesn't sound remotely close to 100mbps, nevermind gigabit.

(19*8192) / (8*3600) = 5.4 mbps

That's half of USB 1.1 speed...

Copy 19GB of data in 8 hours across the Internet to my home server. This RPi4 setup lives at my girlfriends where I'm spending most of my time at the moment.

Get around 0.7MB/s upload speeds.