If you are using a client/openvpn on Windows 10 and you use the block-outside-dns option to prevent DNS leaks then you may experience some serious connection delays.
What is a VPN? What does it accomplish? Why should we use one? Find out the answers to these questions and more in this concise blog post.
This is a guide on how to install DefenceVPN OpenVPN on Windows XP, Vista, 7, 8 and 10.