All VPN protocols create a secure connection (or try to) but they don't all do it the same way ... However, at least one protocol does have fundamental flaws in its key transmission process, making it ...
"These modern protocols offer superior encryption, faster connection speeds ... Windows RRAS Server (VPN Server) will no longer accept incoming connections using the PPTP and L2TP protocols.
Your distance to the VPN server can also impact the internet speed. If the VPN is far away from your physical location the data has to travel a long distance which requires more time. For example, if ...