I don't know if the latest Windows update did this to everyone, but on both my computers the start menu has been opening significantly slow for the past 2 weeks. I couldn't get it for the video, but it can get as bad a 8/10 seconds to render anything. That's why I spent a week to see if I could make something better. It is still very crude, but already usable, at least for how I tend to use the start menu. The next step is to add a search box 🙂