So I was trying to play in the afternoon, and lost twice, with close to bottom fragging.

I went for a ~1.1km jog, and played an escalation like 3 hours later. My gosh, the experience hit different. It was like I was a lot more alert, and I was able to lock my crosshair more reliably. Holy crap, it hit different.

I suggest you guys try it. Like some kind of exercise (in my case, it's cardio) and see whether it helps for you.