Wyeast 3711 French Saison Yeast

Disappointed, lost a batch

I am disappointed with this strain, it took 4-5 days to take off, and I had all kinds of off flavors. I split the batch and did half with the Belgian, half with US05 and the US05 went fine.

ALL ok

Is it the fault of the yeast or my execution?

I used one package of Wyeast 3711 to ferment the Lemondrop Saison all-grain recipe (5 L). The starting SG was 1.080 and was reduced to 1.030 over the course of one week. I ordered another package of the same yeast and upon receiving it, I placed it into a solution of re-hydrated DME to grow up the yeast count. After about 36 hours, I moved the suspension to the fridge. After an overnight to precipitate the yeast, I poured off the excess solution and allowed the yeast to adjust to room temperature before pitching/swirling into the fermenter. After several days. no change in the SG was observed. So was the 2nd batch of yeast bad or was my execution during the wort preparation the cause that I couldn't get the SG down to 1.010 or so?