That video was taken before I commented out the line: dtoverlay=pitft35r,rotate=90,speed=42000000,fps=20
in config.txt and replaced it with
dtoverlay=pitft35r,rotate=90,speed=80000000,fps=60
It’s smoother now.
The rpi2 is overclocked to 1.1ghz, sdram at 483, core not overclocked.