I turned this off in the customize display menu and can't say I noticed any difference after hitting the start button, which is when I'd expect 'welcome effect' to take place. The next day, I noticed the Turbo Boost/VC setting display was missing from the menu system. The 'page' that used to have it only had 3 choices to scroll through instead of 4. Re-enabling the animation didn't seem to make it come back.

The next morning, I fiddled with the display customization and something I did apparently made
it come back. Or perhaps it was just a transient fault that made the system unable to display the data so removed it from the menu. Who knows?