@andrewglass3
Fixed - turned out to be a couple of issues, the openvpn package was borked. Tested with a static site to site instead, wouldnt connect. Full clean install and repeat the site2site with shared key and we are up and running!
Link speed with i3 6100 pfsense box = 11MB/sec from ovh to home which is saturating the link. Previously on the edgerouter 4 which has no aes-ni or offload ability for openvpn I was lucky to maintain 1.5MB/sec. This is sooooooo much faster :) I really need to learn pfsense fully now :)