I have bad fps, stutters, and horrible hitreg only in competitive, spike, dm and casuals are fine? Is this anticheat ruining my game or what? Does someone know how to fix?

I dunno. I'm a bronze or something like that, but I just miss split. I'm not very good at any of the new maps, I always die a lot, but I was always good at split, not to mention the atmosphere of the map gives me some nostalgia to when the...