Jumbo Frames, let’s talk about it.

I always see some of the comments agree. Some portion agree with tweaking it or leaving it as is. This makes it extremely hard as a rookie, to determine what is the proper step to best optimize an environment. When it comes to performance tuning an environment, what is the official recommendation? Is the other half comments just saying to leave things default because they don’t understand something? Is the other half stating to do things just out of a 0.9% performance increase? Is it an ego or self pride thing? Is it a vendor oriented device thing? Which white paper do I confirm to begin coming up with a solution? I’m genuinely fucking lost. Please fuck me up with knowledge, I beg you.