Well, it seems to me that, with the current update (19.09), they've somehow increased the difficulty of Garden of Dismay, at least in Lvl IX.

Last week I was trying to find an auto-farmable team in my roster, found almost a same one as Kulimar suggested above, but replacing the Gunner Dog with the Green Bat => I've got 100% succes rate. Today, I've got 2 matches ended with a defeat, with the same team....

Also, it's just me who remembers that the MCR's in Lvl X, didn't have life talismans equipped before..?!