How fast a site shall open would depend not just on the Internet connection of the website visitor, but also on the connection of the hosting server in which the internet site is hosted and on the network infrastructure - routers, server network card, and so forth. Slow connection or hardware that is unable to deal with a high volume of inbound and outgoing traffic can have direct impact on the user experience of your customers and the overall performance of your website as people shall most probably see error messages that the website is not available or it shall take some time for your content to load. In case this sort of a thing happens, it's not very likely that the guests will revisit your website. That is why you have to always examine the connectivity of any hosting machine that you buy and not just the main hardware components like hard drive, central processing unit and physical memory.