10 points is the cutoff. The only way the All Blacks can earn RP at home atm is if we're playing Ireland.
To go through an example,
(or see WR's graphs here - near the end), in round 1 it was Australia on 84.48 +3 = 87.48 vs NZ on 93.99. NZ only earn points once the opponent is above 83.99. Australia was above 83.99 by 3.49 RP - so NZ won 15% x 3.49 = 0.524 RP.
(It's 15% when the winning margin is 15+, otherwise 10%)
If South Africa don't beat Australia next round,
(and if the ABs keep winning), there'll be no RP on the table for the All Blacks in any fixture until the 3rd Bledisloe test in Tokyo in October.
(and if Argentina then beat Australia in Salta, NZ would have to wait until Twickenham in November)
FWIW Australia can't win any points off Argentina today either. Australia is 84.45. Plus home advantage brings them to 87.45. They can only gain points once their opponent is above 77.45, and Argentina is only at 77.02.
EDIT: I just noticed, even *after* Chicago (November 2016) NZ were still at 94.57 RP - higher than the 94.52 we're on now. There's no recovery happening for the All Blacks.
Though TBF 2016 was just an artifact of the unusual way the RWC 2015 QFs turned out, with all the RP concentrated in the TRC - 88.92 on average.