Bridge 2019 finally looks fast

Congrats to Adobe, I'm with Bridge from beginning. It's always been my go to 1st place to upload and look at images. 2019 is first blazing fast version.

Great.. of course, for those smarter than me, I'm not that technical, curious, what did they do to achieve it, and why did it take so long?

It's been agony for speed up till now. (which did first Bridge come out?)