Hotrodding the Anet A8: up to 120 mm/s

I just got Klipper up and running, and thought I'd see how fast I could get it printing. This is a simple box, 20x20x50 mm, starting at my usual 60 mm/s print speed at the bottom and bumping the speed up 12 mm/s at a time for every 8 mm in height to top out at 120 mm/s.

The printer is an Anet A8, with the motherboard replaced with an Arduino Mega and RAMPS 1.4 combo with DRV8825 stepper drivers set to 1/32 microstepping. Firmware for this run is the latest Klipper (https://github.com/KevinOConnor/klipper/), running on a Raspberry Pi 3.

This was an easy test print. I plan on running the test again with a cylinder, and to also print it under Marlin 1.1.9 to see if Marlin would've been able to keep up.

(Copied from https://youtu.be/O71EADC1JuU)