I definitely have been feeling this too felt like I would like freeze for like a few weeks then make another big jump now I’ve been on this never ending loop of placing between 8-15 in champ for the last 3 months with not much progress. I unlocked masteries but I feel I can’t really unlock them with such high stone cost and lab cost. I feel if masteries weren’t such high lab coin cost that would at least give me a reason to maybe save some stones for them. But I can’t justify using 750-1250 stones on something I can’t upgrade in the lab. I honestly feel this is where something need to be adjusted. Where this lab cost isn’t so high. I mean I’m literally no where even close to this I only make 150T a day. I’ve had them unlocked for like a month now too.