Well this week i played in a fresh 3s team
We got to 1888 before we ever lost raiting
Every single loss we lost 0 raiting (which i noticed and found odd) until we got to 50 games played, on the 50th game we happened to lose and our raiting went down by like 6 and since then the raiting has been bouncing up and down as normal
It literally felt like it was free boosting us to 2k
Idk my anecdotal experience with arenas in tbcc makes the scenario of being stuck at 1200 seem almost impossible without throwing games