My network setup is simple, AirPort Extreme with two airport expresses extending the network. Security is WPA2. My modem is an ARRIS SB6183. I currently pay for 300mbs internet but I'm only getting between 50-120mbs. I'm wondering if I'm not realizing the true potential of the full 300mbs network speed is because of my airport express that has a wireless network capability of 802.11n. If the bottleneck isn't the hardware then would anyone know how I could change my network settings to increase the network speed.