Pretty interesting how an old hardware works well and compute well in the strange configurations.
Prereqs: Intel Atom N2800 1866 MHz and 2 Gb RAM.
Since there are no NetBSD builds of xray-core and v2raya — I spin up a FreeBSD VM inside the Qemu and without NVMM accelerator (not supported by my CPU). Execute these programs inside this VM — and the server still running and even doesn't overload 
Processes graph from Munin. It shows that there are near 53 processes before 11:00 and near 65 processes after this time.
The memory usage by category graph. It shows rise of anon memory from 0.3 Gb to 0.8 Gb at near 11:00 or 12:00.
Load average graph from Munin. Overall usage were at near 0.3 but raised to 0.8 at 11:30. With one visible spike to 2.8 at near 12:50
CPU usage graph from Munin. The graph shows 5-10% CPU usage. The graph rises to near 5% at near 11:40. With one visible spike to 120% at near 12:50.