I've hired gyprockers (drywallers in US) here in Australia that use lightweight steel framing and it is obscenely fast. They have wall frames up (nailgun that b

I've hired gyprockers (drywallers in US) here in Australia that use lightweight steel framing and it is obscenely fast. They have wall frames up (nailgun that bolts to concrete floors) in literally minutes, slap up the gyprock and then most of the delay is waiting for the plastering to dry so they can come back and sand it. That's just interior tweaks though rather than anything particularly structural.