V2ray is proven to have a faster connection than existing VPN protocols such as PPTP, L2tp/ipsec, openvpn or SSTP and does not use high resources.
Using v2ray will not be detected like using a VPN. Some software, websites or applications can detect users using VPN.
V2ray with a speed that is stable and maintained but still has very good data encryption to keep the user safe when in use.