Compared with Raspbian running on the Raspberry Pi 2, this one is very fast.
There's no lag when using the file system, moving, deleting and creating basic files.
I think that the slowdowns you noticed in this video are due to the internet connection.
Anyways, I would suggest to take a look at my other video, where I test various video files in Kodi:
Right now I'm working a second video, focused on me testing the included apps, as well as some benchmarks.
Hopefully, that way, I'll convince the latin-american makers to choose Guitar over other alternatives! ;)
Hmm, the OS does not seem to run that smooth/fast. Thought the Guitar would be faster than that. But I guess I am wrong. It would be so cool to have a Linux mini PC but Guitar is definitely too slow