How can I check if any part of my PC is limiting its overall performance?

I have a gaming PC with a solid graphics card, but in some games, the performance doesn’t seem as smooth as expected. I’Ve already updated the drivers and system software, yet the issue continues. ¿Could it be that my CPU or RAM is creating a performance bottleneck?
I came across something called a bottle neck calculator that supposedly helps identify such limitations. ¿Has anyone here tried it or can suggest a reliable way to analyze hardware performance balance?