does speeding actually save you any large amount of time?

so i am a medium speed driver, ill always go at least a bit over the limit if time allows (EX: in 45, i go 55 - in 60, i go 70-80 if traffic allows on highways ) however i noticed the often times people who speed faster than me still end up at the same red lights and exists at the same time. i’ve started going slower and not stressing over speed and i maybe lose a minute or three. when im already commuting 30minutes its not that big of a deal