How can I optimize my router to get maximum transfer speeds?  I average 72 Mbps.
Notebook-Speedtest.net 31.58Mbs down/3.08 up. I’m just confused about transfer speeds not being 300 Mbps. Can or should I correct this? When I purchased router it said the transfer speeds would be 300Mbps. I’ve read and read until my eyes hurt but what am I missing?
PC1: Connected directly through 1 gigabit ethernet LAN.
I’m using a MSI GT640 notebook with a onboard NIC, Ralink Techology, Corp. 802.11bgn 1T1R mini Card wireless network adapter. Driver date: 7/6/2010, Driver Version: 3.1.8.1. ( WLAN RF module Ralink RT390, MSI MS 6891). 
Running: Windows 7 Home Premium 32 bit PC1 and Windows 7 Home Premium 64 bit on MSI notebook with Microsoft security essentials on both.
Router info:      Hardware Version: B1
Firmware Ver:      2.07NA, 14, Jan, 2012
802.11 Mode :         N only
Channel Width :         Auto 20/40 MHz  
Auto Channel:      Enabled.
Transmission Rate :    Best (auto) Channel : 2.462 GHz- CH 11 
Security Mode:       WPA Personal
WPA Mode:       WPA2 Only
Cipher Type:       AES
Multicast Streams:      Enabled
Multicast Streams IPv6:   Enabled
WAN Port Speed:      Auto
WISH :            Inactive  
Wi-Fi Protected Setup :      Enabled/Configured
Wireless Radio :         Enabled 
Log Details:                 notice Aug 11 11:06:39  /rootDesc.xml not found, responding ERROR 404
I disabled SteamEngine (QOS) then rebooted the router and briefly had 150 Mbps but it fell back to 72.
TIVO has a steady 130 Mbps.
No cordless phones.
Yes there are other routers a few homes around me.
Yes I read the “sticky notes” about getting 300Mbps.
Cable Modem is a docsis 3.0.