I'm still on 4.3.1, not gonna upgrade until I see a stable program.
Garmin is aware of the video issue with Windows 8.1, but something I didn't have before that has started in the last two days is the route is not on the center of the road. If you zoom in as far as you can, the route line is on the very outside edge of the road, not in the middle like usual. Looking at the route (zoomed out) the route is 1/4 inch off of the road (I-95).
I don't believe my laptop has done any updates