I have 100Mbps service and without VPN connected achieve 100+Mpbs consistently. VPN installed on my computer itself, speed tests go down by a fairly reasonable amount (~80Mbps) but if I set up the VPN on my router (Buffalo wzr-1750dhp) instead of my computer, the speeds take a huge hit. I have tried 2 providers (pure vpn and unlimited vpn), multiple cities, multiple protocols (openvpn, pptp) yet cannot seem to achieve anything above about 20Mbps speed. I'm using one of the relatively recent kong builds.
Is this router just too slow? Has anyone else achieved better?
I also have the WZR-1750DHP, but it does not have DD-WRT on it, but yet I am experiencing nearly the same issue. However, while slow, in many cases applications cannot reach their destinations for doing things like streaming music, or downloading files, while many web sites can be reached just fine.
This seems to apply when OpenVPN is setup to redirect internet traffic in and out of the VPN.
Oddly some Android applications can reach their destination just fine without issue.