No theirs a noticeable delay between fast clicking the button to open/close the menu and fast pressing the button. I can get almost 2x the menu open/close cycles with the mouse then pressing the key. Pinned tiles are also missing (then load in) much more often opening the menu when pressing the win key fast vs mouse.
Also a suggestion to add a option to ensure the entire menu is loaded at the cost of +0.25 secs or so to open the menu. When the menu opens and half of it is missing and slowly loads it feels kindof wack. This has always happened at times across all versions. In the 7 years of me using windows 10 I've only seen this once (using win 10 menu in start11).