I take it your asking for ideas because your bike is no longer under warranty? I've never experienced shaking like your video demonstrates. My bike always has loaded saddle bags and topbox mounted. A few weeks back I posted in another thread that I have a tendency to take my hands off the bars when exiting the interstate. From 75mph to whenever I feel like or need to grab the bars again. I've never had my front end shake. I'm not saying it is not possible but what you have shown in your video seems a little extreme to me. Maybe I’ve just been lucky over the years but I’ve never had a bike whose bars shook like that.
I think you should look into some of the prior suggestions.
I think you should look into some of the prior suggestions.