you need to use v 0.3.1 for nodebb v1.4.5
npm i firstname.lastname@example.org --save
for http://retropie.org.uk/forum/ we have around 3-5k page views per hour. Running with mongodb, redis, and nginx as a front end proxy with currently 4 nodebb processes (I recently reduced it from 6 and it seems to manage well). nginx serves up the static content.
Server is a VM with 4gb ram and 2 cpu cores.