Fix OpenVPN Server Maximum CPU Uses

Hi, I need Fix OpenVPN Server Maximum CPU Uses. I have 2 openvpn server. one server use maximum cpu & another server use low cpu. My both server configuration is same. one server install developer 1 & another server install developer 2. Developer 2 installed openvpn server use low cpu & developer 1 installed openvpn server use maximum cpu. if you can fix, please inbox me