Best way to improve your calculation speed and method?

Hi lately im doin a lot of tactics,and im using the classic method CCT,the problem im facing is most of the time im really slow at calculating and i get lost in variants,or even i have problems to find some candidates etc and out of curiosity i started looking to top tactics stats and i noticed that the top players in some problems where i spend like 2/3 min calculating(problems with deep lines),they spend even 10/30 seconds,now im old (33) and i know my limits but how can those players calculate so fast cause those problems are not like classic mating patterns etc.There must be a trick right?(im using chesstempo blitz tactics currently like stucked on 1750) if someone could explain this to me it would be a pleasure

I saw one of your games that you lost on time and you are spending 30sec for just a developing move. The way I do it is to just develop and go with it when I see nothing. If I see every piece from the opposing pieces are defended and I don’t see a way to remove the defense or attack a piece then most likely I will just develop and go with the flow. I don’t know how, but I am very fast at calculation. I think it is because I see the forcing moves from my side and my opponent’s quickly which is good to have. And in that game you just hung your pawn and you thought about your move for 30sec and that is unacceptable especially when you are doing rapid which in the game was rapid. And also I don’t know how I am giving advice to a person who is 400 points rated higher than me.

HI thanks for the advice but im not talking about games,im talking about tactics and yes i know im noob i blunder a lot

The 'trick' you're observing isn't superhuman calculation speed, but rather a massive, deeply ingrained library of pattern recognition from years of practice. They aren't calculating every line from scratch; their brains instantly recognize the key tactical motifs and promising candidate moves, allowing them to find the correct path almost intuitively.

Yes im aware of that,but im confused,to explain it better: i dont remember the tactic number,but when i looked up to top stats i noticed this tactic were i spent literally 8 minutes and i even went wrong while many top players did it in less than 30 seconds,in this tactic there werent checks,but mostly captures and treaths as candidates and the position was a mess,there were many candidates but still they could find the right one in few seconds,is that still attributable to this library of patterns that they have in their head,or is this method slow(classic cct)?

You need to just choose the most forward and more advancing move. That is most of the time the best.

I can't tell if you are being sarcastic or not. You realize that at your elo your percentile is 98.3%, right? You're in the top 2% of chess players and saying your a noob. What???