My PC is Dell Vostro 420, and it is upgraded to Win8. The problem is that when installed with the Plugable USB3 to VGA, web browser is very slow. This happened to Chrome and IE. If uninstalled, the problem is gone.
Thanks for posting here, I replied to your inquiry to support@Plugable.com with a couple of questions to help us troubleshoot. Did you get the e-mail by chance? Replies to that e-mail will reach us directly.