I guess I'm in the minority here, but I'd say it's slow. Not SLOW, but slow, compared to the Linux box I have right next to the Mini. It's tolerably, but I'd say starting up the app that I work on takes about twice as long on the mini, and it runs maybe 1/2 as fast? It's noticeable, but not so slow that I can't use it. Maybe this new release will speed things up for me. Nothing else is slow about the Mini, but Docker is noticeable slower.