Believe it or not ... the ruderalis gene input to the strain , most times does NOT dominate the father / mother traits ....it was added for fast finish , compact growth BUT it sometimes throws a curve : different structures, early flower times ( had one pistil up at 22 days from seed ) , fast finish ( 60 day Wonder , dwarfs cuts ) , etc.
On the negative .... it’s a THIRD WHEEL mix ... sometimes it doesn’t EVEN auto ... it can perform like regular strain, tap out at transition, stunt , stall , mutated growth , weak crosses , etc.
However , today’s autos are much much better than say 15 years ago or so. There are great breeders coming from smaller farms and creating better beans .... hazeman , BOG , Mosca , Strayfox, and others. I say try some of those or greenpoint.
So they run as long as THEY NEED. Go with your gut on maturity ( plus your loupe .... lol ).
It’s like cooking .... ready when it’s ready.