Weird to read about dropping IRyS. I mean, I dropped chuubas before, after about 2 months. I tried to rationalize it by saying that "she got worse" and stuff, but I actually got bored of them after honeymoon phase. IRyS is first and probably last that I stayed with many months since her debiut and I will stay in the future.
But yeah, I see that she slowed down. I guess after months of being deified by huge holo audience, she isn't as grateful and got used to success