When Google launched their Google Instant platform they made sure that it would not be enabled by default for people using outdated browsers and slower connections.
Google has now updated the platform and it can now be disabled if the company believes that the user’s machine is not performing optimally.
Google has updated their search preferences with some new options. By default, Google would automatically decide if your current session is suitable for Google Instant or not.
You can disable the auto-detect option and also turn off the Google Instant functionality.
This happens to be one of the many updates Google has implemented on Google Search in the last couple of weeks.
The entire list of changes can be accessed from here.