Problem with NFS home folders

Hi all.

I know this may be more of a general GNU/Linux admin question, rather than a Trisquel-specific issue, but I am using Trisquel, so I think it's probably ok to post here.

I've posted the issue over on LinuxQuestions.org, but it's not getting much attention there. Here it is:

https://www.linuxquestions.org/questions/linux-general-1/large-nfs-file-transfers-freeze-up-my-system-941677/

Can anyone help?

Thanks.