Along with other factors, yes; Internet speed may be affected by other users sharing the cable line. Speed performance is also subject to routing on the Internet, the speed of the host server you are visiting and the amount of traffic on the host server. This means that speeds will also vary depending on the site being visited. Cogeco diligently monitors traffic volumes and is constantly optimizing the network to ensure that you are getting the speed you need 24 hours a day, 7 days a week.