"Despite the scaremongering of the NOs, AV is quite amenable to manual counting"

In Aust, Compulsory voting means well over 99% vote (there are always a few...), so actually there are more votes per population than in other countries.

We still do paper voting (Upper and lower houses together), and manual counting. Most seats in Federal. State, and local seats are decided by close of Saturday counting - well before midnight. Many seats are decided within an hour or two. We have several time zones, so the last state (W.A.) closes about 2 hours after the Eastern States. Usually sufficient seats are decided (each on > 50% of primary vote) by close of counting Sat night that a winner is declared, especially in Federal & State elections, and the losing and winning speeched made.