The advertised speeds have a difference from actual speeds and may be lower or higher. This, however, does not mean that the ISP is playing games on your money. It is good to understand that a router offers speeds that match its Wi-Fi standards. Other factors that bring up the change in speeds are the congestion of devices, the hardware the router supports, type of connection, distance, and interference of the waves. Real-time speeds will also improve past the advertised ones if the conditions are favorable.