BTW, you might want to check the speed of the network interfaces and router being used.    I was seeing very slow file transfer speeds with rsync (hint: use --progress).    When I investigated I found that the speed limit on the wired network interface on my current computer was set to 100 Mb/sec.   I enabled Allow auto-negotiation on the adapter and reconnected it to the network, which allowed it to connect at 1 Gb/sec, rather than 100 Mb/s.