This happens sometimes and is not a cause for worry at all. Here we have provided a detailed, step-by-step guide for troubleshooting: http://www.purevpn.com/speedup-tips.php We strongly recommend you try all techniques provided in above write-up. If none help then you will need to adjust your MTU settings in your Windows Registry. Please follow these steps to modify the MTU settings. First of all you will need to determine what is the optimal value of MTU for you: Look here: http://www.howtonetworking.com/VPN/mtu4.htm Secondly, you will need to look on how to modify registry for correct settings, refer here: http://support.microsoft.com/kb/826159 For MAC, please refer here: http://support.apple.com/kb/HT2532 If this doesn't help, try to switch protocol ie PPTP to L2TP and vice versa. In 50% cases switching protocol solves the issue.