There is a good chance you are experience a CPU bottleneck at those points. I know, I know, you have an i7 3770k, but every CPU has times when it can't keep up. Tomb Raider has a few spots where the CPU gets hammered. It is just how it is.
I guess it seems to be the issue . It's only the regular fan that came with the CPU I am using but with easytune I overclocked the CPU a little and it's absolely increased performance . I have a temp program running and it seems my CPU is around 55 degrees Celsius ( 131 Fahrenheit ) . Is this too hot . It's this temp in game when being stressed . About 46 idle?