Yes, pageloads can take a long time. Sometimes they don't, though. I have no further ideas on how to make them better. If anyone reading this fancies themselves a MySQL optimisation whizz, please talk to us.
In the meantime, revoting is now a no-holds-barred flip-flop switchfest. Revoting doesn't grant the voter GP, but revoting down takes away the one XP that the votee had received with an upvote. The voter giveth and the voter taketh away. A revote also costs a regular vote, so perhaps there are few holds barred in our switchfest after all.
Enjoy.