I have my VPN running on my Asus n66u router running Merlin. Without VPN, I get 150-200 Mbps. With VPN, I'm getting 10-15 Mbps (wired Ethernet connection to router). I've read that this is probably because my router is underpowered. I'd like to only have a few devices consistently behind my VPN. (E.g. Nvidia shield, Synology NAS). What are my best options? I'd like to be able.get higher download speeds. I have a raspberry pi laying around, but I'm guessing that won't be able to get much higher speeds either.