Mechanical keyboards are all the rage right now, especially for PC gamers. But the trend has been going for over a decade at this point, and there are only so many LEDs you can stick inside a plastic case before consumers ache for something new. That new hotness is adjustable actuation, a technological leap forward in the way keyboards work. And unlike some of the more nebulous features of high-end keyboards, this has tangible benefits in terms of what they can actually do. That said, it’s also pretty complicated, and the benefits offered by adjustable actuation are so niche that many users mi…