The question is whether or not game play can be noticeably improved by squeezing out that "bit more performance".
And at what potential risks and tradeoffs?
Overclocking could improve laptop performance. How much actual improvement and for how long is likely to be quite a discussion.
A similar discussion would be is if that improvement actually translates into better, faster game play where you actually win more.
Simply consider that if bandwidth cannot "keep up" then all that is happening is the laptop/GPU is being stressed to no real gain.
Maybe just gets hotter via any available thermal headroom but with no real performance benefit. Or added gaming wins.
And the extra heating will simply lead to an early laptop demise...