I’m genuinely curious about that, but couldn’t find any actual answer. Every time there’s a new act, ranked matches are temporarily disabled. Why is that?

So I'm currently on 0.22 sens with 1600 dpi. I feel it's pretty good for me and I'm on ascendant 2 with some quite good performance. The only issue is after some rounds or maybe games, my hand starts getting tired and my performance gradua...