@cbay Cannot make sure that Ping of Death will make your VPN drop. The ICMP packets which are not in the range of 64~65535 bytes will belong to Ping of Death attack. You can try to upgrade the router...

Could you ping 192.168.1.1? It's the GW of your R470T+. If you can ping 192.168.1.1, it means that R470T+ can forward the data normally. If not, R470T+ should has problem, check whether has some...

I saw the datasheet of ER5120 V2 and found that its NAT throughput is 350M. And this testing result is under the professional testing tools. So actual speed is less than 350M....

I found that TP-Link has released the new firmware for T1500G-10MPS. You may try the new firmware. And you can check the CPU usage. Try to disable some function like SNMP, LLDP and so on. These...

It seems that tplinkfrance has a ticket system. Did you try to feedback the issue through their ticket system? https://desk.zoho.com/portal/tplinkfrance/newticket For phone support, I found following...

@dorksville It seems that your router is behind other router. You need to open UDP port for your VPN router. Make sure that your front router support to open port then configure it.