In Australia we get the 'general' result, i.e. which party won and winners of most seats, on the night of the election, with a few seats needing a week or two to fully count and recount. Sure it might take a few hours but the AEC have things pretty streamlined.

I don't think it's better to instead give them a way to speedrun fraud.

People can scream fraud, who cares. Just mean you're a sore loser.