http://www.tp-link.com/en/faq-530.html Maybe this FAQ can help you.

Please enable the IPSec ALG and open port UDP500 and UDP 4500 for your VPN Router.

1. Check the firewalls in your PCs on both side. 2. Check the Block Ping from WAN setting in the Router.

Did you try another way to do the speed test? Maybe sometimes it related to the website.

I suggest you can contact the TP-Link support for some help.

Hi, dude. I think maybe you misunderstanding something. Your ISP router has a IP of 192.168.0.1. That means your R600VPN will get a private IP with the subnet of 192.168.0.0/24. Then, you need to...