May speed up your computer/internet
To Disable IPV6 add the following line to /etc/sysctl.conf
net.ipv6.conf.all.disable_ipv6=1
Blacklist unnecessary USB WiFi driver modules Add the following lines to /etc/modprobe.d/blacklist.conf
blacklist rt2800lib blacklist rt2800usb blacklist rt2x00lib blacklist rt2x00usb