# Disable bt and wifi
dtoverlay=disable-bt
dtoverlay=disable-wifi
# Setting to 64 bit OC
arm_64bit=1
/boot/config.txt file:
arm_freq_min=250
core_freq_min=100
sdram_freq_min=150
over_voltage_min=0
# Turn OFF HDMI output
sudo /opt/vc/bin/tvservice -o
# Turn ON HDMI output
sudo /opt/vc/bin/tvservice -p
Total = 4hrs 11mins
#Turn OFF USB chip
echo '1-1' |sudo tee /sys/bus/usb/drivers/usb/unbind
#Turn ON USB chip
echo '1-1' |sudo tee /sys/bus/usb/drivers/usb/bind
Total = 7hrs 21mins
Test