Hi having had this issue where VW 2017 Sp3 turns off XML communication with LW, I can confirm, that I have no G drive or dropbox etc in my system. This happened to me about a dozen times. Its interesting that you say VW turns off functions when you slow down as during my interaction with VW support I have turned graphics card to 'Good performance and compatibility'. This seems to have fixed the XML issue. Very sad that my 2015 MacBook pro which has the fastest graphics card and ram that you can buy requires this to run smoothly and to allow XML communication.