This is true. Fewer frames also help to provide a sense of mystery - that you're literally missing something, at the margins, and this vacuum subconsciously cues your mind to fill in the blanks from within your own active imagination, which actually increases engagement and story investment. Its a technique called closure.60 is way too many.
And yes, if you've been paying attention you've already realized that I am entirely full of shit.
Truth, all else being equal. Unfortunately all else is not equal, so choices are made that end up giving us a ~30fps standard on consoles.ALL games are better at 60.