For me I think it’s when win7.64 resets the usb bus and my beringer bcf2000 stops working. If I switch off the controller everything works again. The controller issue is also when N6 is closed and I’m using it for the total mix mixer.
It’s a bit weird because if I use the controller for a mix session it works fine, mostly, but if I leave it, either because I’m editing audio or if I take a coffee break it stops working and makes N6 stutter.