Google may be slow due to a low amount of available bandwidth. The responsiveness of Google and other Web pages in general relies on a computer's available bandwidth and processing capabilities.
Internet speed and responsiveness rely on bandwidth in the form of data, which can be represented in kilobytes, megabytes or gigabytes. Google's response time, and the response times of other websites, generally increases as the available bandwidth from the Internet service provider increases. However, if the amount of available bandwidth is low, and it's shared by multiple computer networks, then that could be the primary reason Google is responding slowly or is unresponsive.