Just tested. Ssh has indeed better performance, at around 870Mbit/sec. But the gap in my -anecdotal- testing is much smaller than OP's and maybe predictable du

Just tested. Ssh has indeed better performance, at around 870Mbit/sec. But the gap in my -anecdotal- testing is much smaller than OP's and maybe predictable due to the differences (as OP described) on how OpenVPN and ssh work.