I never enabled auto.
I simply push the switch via other means.
normally a simple
SHIFT T T (wait)
usbn Menu+z (enter) "Left Top Page Back Button"
Does the job on the 3.
That's plenty fast.
Assuming you use launchpad and Myts (with the juicy big fonts
) but why the hack wouldnt you? Dunno about a 4. haven't got one