According to Google

Google Instant can save 2-5 seconds per search

But for me 2 or 5 second should not be a big deal at all. As I have a slow connection most of the time therefore the “Instant” predictions stays disappeared for longer than 5 seconds and that becomes annoying for the curious searchers. Then I’d be like “get me out of here!” after refreshing the page numerous times.
So, how can you turn that thing off?

Well, that’s pretty easy just head to your Google Search Settings and click on “Never show Instant results” under Google Instant predictions