linux_wifi_perf.bash

# most of the hacks taken from 
# https://support.system76.com/articles/wireless/

sudo vim /etc/nsswitch.conf
# look for the following line
# hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4
# If you find this file, replace it with the following line:
# hosts: files dns

sudo vim /etc/modprobe.d/iwlwifi.conf
# Add the following line
# options iwlwifi bt_coex_active=0 11n_disable=8 swcrypto=1

# You may also try setting regulatory domain for wifi
sudo iw reg set US
sudo sed -i 's/^REG.*=$/&US/' /etc/default/crda

# Check current regulatory domain
sudo iw reg get

sudo vim /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
# And change the file to read (effective upon reboot):
# [connection]
# wifi.powersave = 2

# Probably you should also checkout TLP config for radio power save
http://linrunner.de/en/tlp/docs/tlp-configuration.html#networking