It’s advised you choose the second option. When you connect a VPN, you have two choices: set up VPN on your router or set up VPN on each individual device. You can close all programs and restart your computer to see if the VPN speed is increased. If your computer are running out of free RAM, CPU or other resources, you may encounter a slow speed. You can change to a wired connection to see if it can boost VPN speed. Wireless connections use a shared channel to send and receive data which may cause slow SPN speed. Just power off and power on the modem and router to restart them.

You can also try to restart your modem and router to see if the VPN speed can go back to normal. Generally the speed hierarchy from fastest to slowest is PPTP > L2TP/IPSec > OpenVPN > SSTP > IKEv2/IPSec.

But if you are facing slow VPN speed all the time, you can change the encryption level which may have less security but has faster speed. It keeps a good balance in speed and security. Most VPNs use OpenVPN as their default encryption. You may try to change to the UDP protocol to see if the VPN would be faster. UDP will not check itself, it is not as stable as TCP, but it is faster. TCP will check itself to make sure all transferring data arrive correctly, so it’s more stable. Most VPNs use these two protocols: TCP and UDP.

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