Hello,
recently, I've come across this test comparing OpenVPN vs. SSH tunnelling:
http://blog.backslasher.net/ssh-openvpn-tunneling.html
so natutally, I guess it would be interesting to perform similar test cases in a Kronosnet - OpenVPN duel so that the expectations are set for "VPN on steroids" and perhaps the limitations are identified if the results are too far from "on par".
(Just saying, not doing, I wouldn't go too far in tweaking kronosnet for the best results possible, I'm afraid).