VPNs will definitely incur overhead and latency costs, yeah.
OpenVPN can be fairly slow if you are sharing CPU usage (ex. VPS provider) with other users. You are also most likely implementing NAT on your VPN server which is probably not accelerated unless you are paying for an expensive appliance that does so.
OpenVPN can be fairly slow if you are sharing CPU usage (ex. VPS provider) with other users. You are also most likely implementing NAT on your VPN server which is probably not accelerated unless you are paying for an expensive appliance that does so.